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.
Calisthenics have long been a basic component of Warfighter training to increase strength. They require minimal equipment and space and can be done virtually anywhere. Common calisthenic exercises include push-ups, pull-ups, sit-ups, dips, and squats. They help develop and maintain muscle strength, endurance, and power as well as flexibility. There are many ways to customize a calisthenic routine to achieve a specific fitness goal. For example, performing a low number of repetitions with added resistance will effectively increase muscle strength. Training with a buddy is a great way to provide resistance. Muscle endurance, on the other hand, requires a routine with a lot of repetitions. It’s recommended to include two calisthenic sessions each week on nonconsecutive days, along with other forms of physical training (e.g., plyometrics, strength training, or aerobic training). A 30-minute calisthenic session should consist of one to three exercises that involve multiple muscle groups.
For more detailed information on calisthenics, go to Chapter 8 of The Navy SEAL Physical Fitness Guide.
RAND Corporation recently published a report that evaluates studies and programs that promote resilience in the military. The findings by RAND’s military health research group include practices that promote resilience in military families. Below are a few points that can help your family to build resilience together.
- Emotional ties. Bonding time helps family members become closer to one another emotionally. Shared recreation and leisure time could help tighten family bonds.
- Communication. The ability of family members to exchange thoughts, opinions, and information is an essential step in solving problems and helping relationships thrive.
- Support. Knowing that comfort and support are readily available within a family allows members to lean on each other during good and bad times.
- Adaptability. Families that adapt to the changes inherent in military life are more likely to weather challenges together. Allowing some flexibility in family roles may help smooth transitions.
You can download a summary or the full report of “Promoting Psychological Resilience in the U.S. Military” from RAND’s website. RAND’s research was sponsored by the Office of the Secretary of Defense. For even more information on family resilience-building skills, visit HPRC's Family Skills section.
Misinformation abounds regarding ideal nap lengths for optimal cognitive performance. You need sleep to function at your best. If you do not get the recommended seven to eight hours of sleep a night, then napping can help. Learn more in
Muscle strength is an essential component for successful Warfighter performance. Developing optimal muscle strength and endurance maximizes job performance and reduces risk of injury. The FITT principle can help you achieve this goal. FITT refers to “frequency, intensity, time (or duration), and type” of activity.
- Frequency is the number of sessions in a week that an individual trains. At least two days per week of strength training is recommended.
- Intensity, considered the most important aspect of strength and endurance conditioning, is defined by the amount of weight used per repetition. For muscle endurance, training should involve 20-60 repetitions of 30% to 50% of one repetition max (1RM; the maximum amount of weight one can lift for one repetition) per set. For muscle strength, training should involve 1-12 repetitions of 65% to 90% of 1RM per set.
- Time of sessions should range from 30 to 60 minutes.
- Type of exercise should vary in strength and conditioning routines to prevent boredom and improve gains. A combination of free weights and machines is recommended.
For more detailed information on strength training, read Chapter 6, Strength Training, of The Navy SEAL Physical Fitness Guide.
Being in combat is physically, emotionally, and mentally stressful. Part of the body's natural stress response is to remain on high alert in order to have a better chance of staying alive. This can lower your tolerance for relationship disagreements and can cause irritability and conflict. The following are some tips to help you overcome the effects of combat on your interactions with loved ones:
- Practice emotion management strategies prior to and after communicating with your loved ones to help you calm down first.
- If you are upset, wait to communicate with your loved ones rather than writing or saying something in the heat of the moment.
- Describe your feelings and thoughts starting with "I.” I-statements are more personal and reduce feelings of blame.
- Focus on the communication interaction between you and your partner, not just on the way that one or the other of you communicates.
- Compliment each other!
New York dietary supplement manufacturer Howard Sousa, of Artery Health Institute LLC and DeSousa LLC, has agreed to remove drug claims on his company’s website. Sousa’s Advanced EDTA Oral Chelation capsules were promoted on the website as drugs since the marketing language made disease treatment claims. More information is provided in the FDA News Release.
Virtue Calves was cited for selling veal calves that contain illegal drug residues, which is in violation of the Federal Food, Drug, and Cosmetic Act. The company is now required to keep careful records of which animals have been medicated so that illegal drug residues do not enter the food supply. More information is provided in the FDA News Release.
A new DoD-sponsored report titled Promoting Psychological Resilience in the U.S. Military has been released by RAND Corporation and is available in full-text print and downloadable pdf formats. The RAND National Defense Research Institute (RAND NDRI) conducted a focused literature review to identify individual, family, unit and community-level factors for promoting psychological resilience. The study also included a review of resilience programs.
The full report can be downloaded from the RAND website.
The amount of sleep a person gets prior to the age of 11 has been associated with adult body weight. A 2008 study in the Journal of Pediatrics of 1037 individuals found that shorter sleep times at age 5, 7, 9, and 11 were associated with higher Body Mass Index (BMI) at age 32. This relationship does not depend on BMI as a child, socioeconomic status, TV watching, adult physical activity and smoking, and BMI of a person’s parents.
There are many herbal products available to consumers, yet it is difficult to determine if they are safe. The American Academy of Family Physicians provides answers to questions about herbal product use, potential dangers with specific health problems, and possible drug interactions. A helpful chart about interactions between herbal products and supplements is also available.