Welcome to the HPRC Blog. We've got lots of information here, from quick tips to in-depth posts about detailed human performance optimization topics.
Individuals who practice Bikram (hot) yoga find themselves in a 104°F room for up to 90 minutes, performing various poses and breathing exercises. This intense form of yoga claims to improve flexibility, mental focus, strength, and overall fitness. Researchers have found that Bikram yogis exhibit lower stress levels, improved endurance, muscle strength, and balance after as few as 20 yoga sessions in 8 weeks. Some older adults who participated in Bikram yoga even experienced a decrease in body-fat and improved overall glucose tolerance.
Despite these potential benefits, there are also risks with doing yoga in such an extreme environment. During a Bikram yoga session, people’s core temperature and heart rate can reach dangerous levels associated with heat illness. To reduce the risks, experts suggest sessions of 60 minutes or less, slightly lower room temperatures, and frequent water breaks. Instructors should remind their students to stay hydrated and replenish the water that they’re losing through sweat. If your instructor discourages water breaks, you should find a new instructor.
If you’re new to yoga, we recommend starting off with more traditional styles of yoga that do not involve high temperatures. Traditional styles and gentle yoga (including stretching with yoga) are also beneficial and safer for adults who may be less heat tolerant and/or are beginners.
Many people find Bikram yoga to be challenging and enjoyable, but it’s important to be smart about this kind of workout.
Redotex is a drug manufactured in Mexico and being sold in the U.S. as a weight-loss product. According to the U.S. Food and Drug Administration (FDA) it is a misbranded drug and is not legal to sell as either a drug or a dietary supplement. It is not permitted for use by DoD personnel or civilians.
According to the FDA Import Alert, “it appears to be a new drug without an approved New Drug Application…” In addition, it contains a combination of thyroid, diuretic, stimulant, and tranquilizer drugs that may cause serious and potentially fatal adverse reactions. In addition to posing a health hazard, the product contains a DEA Controlled Substance that will cause a positive drug test. It is very important to read product labels, and if the label is not in English or contains any of the drug ingredients listed in the FDA Alert, steer clear, as it is an illegal product.
For more answers to questions we’ve received about weight-loss dietary supplements, please visit our Operation Supplement Safety (OPSS) FAQs.
Mindfulness isn’t something you have to do sitting still. You can apply mindfulness to activities such as stretching. A great way to do this is by using yoga poses. When stretching in a mindful way, you bring your attention to your breath as you stretch your muscles.
Mindful stretching can help you in a number of ways:
- To focus your attention before or after a workout
- To focus on and relax knotted areas within your muscles
- To provide closure to something you’re working on (such as the transition from work to weekend)
- As a routine before you go to bed to prime your body for sleep
In mindful stretching, the focus is not on doing repetitions or certain times, but rather going with what your body needs in the moment. To learn how, see HPRC’s “Mindful Stretching Exercises Using Yoga Poses” for a step-by-step guide with pictures.
If you limit carbohydrates and underfuel your body, your performance may suffer. Carbs feed the working muscles and help maintain blood sugar. In addition, carbs help you recover after a difficult workout or mission.
Underfueling by limiting carbohydrates can be intentional—when limiting calories, avoiding gluten, or losing weight. Or you may be limiting carbs unintentionally if you are unsure how many carbs to eat or if you’re are skipping meals or snacks due to limited time or money. And female warriors are more susceptible to under-fueling.
So what type of carbs should you be eating? Properly fuel your body by filling your plate two-thirds to three-fourths with carbs such as fruit, vegetables, whole grains, beans, and dairy. Choose a variety of fruit and vegetables to maximize vitamins, minerals, and fiber. Whole-grain breads, grains, and pastas provide more performance-boosting nutrients than white-flour and refined versions. Low-fat dairy products contribute carbs along with protein and calcium.
Carbohydrate needs differ depending your activity, type of exercise, and intensity, and your calorie needs and may change from day to day. For more information on carbohydrate needs before, during, and after activities, see HPRC’s An Athlete's Guide to Everyday Nutrient Timing.
Keep on eye on your weight and performance to help you determine if you’re taking in too few carbs. If you’re losing weight without trying or find yourself having trouble performing at your best, you may be underfueling. For more personalized recommendations on carbohydrate intake, visit a registered dietitian.
Tired of having family members “push your buttons” or inadvertently pushing theirs? You’ll be glad to learn it’s something you can fix. How you relate to people as an adult is shaped by the relationships you had early in life. It’s easy to get drawn into old patterns with family members. But there are some things you can do to stop taking the bait and stop putting bait out there for your loved ones to take.
For example, an old rivalry can re-emerge between siblings, even if you don’t do this with any one else in your adult life. Or it can feel like you’ve gone back in time, and you’re an adolescent again rebelling against your parent. Keep these old patterns in mind, because they can creep into your present.
Here are some tips to avoid reliving familiar conflicts or other unpleasant interactions:
- Don’t put out bait: You can’t control other people’s behavior, but you can control yours. Be aware of what you feel drawn to do, and stop yourself if you know your next move might cause friction (such as calling someone a name, or more subtle moves).
- Don’t take bait: Others will (consciously or unconsciously) do things that trigger your emotions (such as a snarky comment or an overly long story). Slow down and take a breath rather than responding out of impulse.
- Assume good intentions: When you feel baited, assume that the other person isn’t intentionally triggering you and that he/she means well. Even if this is untrue, your different style of interacting with him or her can help break the pattern. And it could even start a new, more positive dynamic!
Instead of being a “perfect” parent, strive to be “good enough.” As a parent, you want the best for your children. At a minimum, you know you shouldn’t neglect or abuse your children. Ideally you’re a caring parent who sets good boundaries for their safe development. But some parents overdo their involvement.
The problem with working too hard to meet your child’s every need is that your child doesn’t learn to become independent. When children experience some frustration along the way or have to figure out things on their own, they become more equipped to tolerate frustration and face adversity. And they learn how to solve problems for themselves. That said, don’t leave them hanging, but gently guide them to figure out solutions for themselves.
Read HPRC’s “Need to update your parenting style?” to learn more ways to be “good enough.”
BMPEA is an unapproved amphetamine-like substance that has been appearing in some dietary supplement products. BMPEA (also known as β-methylphenylethylamine, R-beta methylphenylethylamine, beta-methylphenethylamine, and others) was first made in the 1930s as a possible replacement to amphetamine (a central nervous system stimulant), although it never became a drug because human studies on safety were not performed.
The Food and Drug Administration (FDA) tested 21 supplement products with the ingredient Acacia rigidula listed on the label and found that 9 of the 21 products were found to contain BMPEA, which is not derived from the plant Acacia rigidula. Some dietary supplement products actually list BMPEA on their labels. FDA recently issued a warning stating, “…BMPEA does not meet the statutory definition of a dietary ingredient.” Therefore, dietary supplement products with BMPEA are misbranded and cannot be sold as dietary supplements.
The World Anti-Doping Agency has banned BMPEA. For more answers to questions we’ve received about ingredients in dietary supplements, please visit our Operation Supplement Safety (OPSS) FAQs.
Optimal fueling includes staying well hydrated during exercise. Inadequate fluid intake can lead to dehydration that affects your mental and physical performance.
The first key is staying well hydrated throughout the day. If you start exercising with low fluid intake, you’re already behind. To stay hydrated, drink fluids such as water, 100% juice (diluted), milk or milk alternatives throughout the day. A good rule of thumb is to drink half your body weight in fluid ounces. For example, a 150-lb warrior should drink 75 fluid ounces per day. Foods with high-water content count too! Some examples of high-water-content foods are fruits (especially grapes, watermelon, peaches), vegetables (zucchini, celery, cucumbers, tomatoes), yogurt, sherbet/sorbet, and soup.
Exercise is when you can lose a lot of fluid, especially if your workouts are long, intense, or in heat or humidity. Dehydration—losing just two percent of your body weight—can lead to a decrease in performance. Drink often and drink the appropriate fluid to stay on top of your game. For more information on what to drink and when, see HPRC’s Hydration infosheet.
You may find it challenging to drink enough fluids, but some simple reminders can help. First, keep a water bottle on hand. Just seeing the water bottle is a great reminder to drink more. Also, always drink with meals and snacks. Sick of plain water? Add sliced lemon, lime, mint, cucumber, or fruit to your water. Or add to a water pitcher and keep in your refrigerator.
Anxiety can help motivate you to perform better, but too much can become overwhelming and get in the way of living life to the fullest. When ignored or avoided, anxiety can actually become more intense rather than less. To keep anxiety under control, we have three letters for you: PFD. We aren’t talking about a Personal Flotation Device; we’re talking about first preventing anxiety, then facing it, and finally de-stressing. Read more...
A staggering number of Americans (approximately 36 million) have hearing loss, and one-third of those probably could have been prevented. Hearing loss continues to be a safety hazard for Warfighters at home and in the field. So how do we combat this not-so-silent epidemic? Here are a few tips to help you protect your hearing.
- Wear a hearing protective device (HPD). HPDs should be worn for noise levels at or above 85dB. Not sure what 85dB really means? Check out this guide to occupational noise levels. Also check out “How Loud is Too Loud?,” a graphic designed to inform Warfighters about how and when to choose the proper HPD for their jobs.
- Learn how to wear your HPD correctly. Even if you have the correct protection, it may not be effective if you’re not wearing it correctly.
- Always have disposable HPDs handy. Disposable HPDs are lightweight and easily portable. Make them a part of your everyday gear.
For more information about how to protect yourself against or to seek help for hearing loss check out the DoD Hearing Center of Excellence website or make an appointment with your local hearing loss treatment center.