Erin Beresini is a journalist covering fitness, endurance sports, and health science. She is the author of ‘Off Course: Inside the Mad, Muddy World of Obstacle Course Racing.’ Last spring, among the ...

I was on my fourth and final lap around the track during the mile run for my fifth-grade Presidential Fitness Test when it happened. My stomach gurgled, I stopped abruptly, and I bent over and heaved.

The night before a military fitness test can be a swirl of emotions. Knowing what to eat -- and, just as importantly, what to avoid -- can add to that anxiety. Here is a question from a reader who is ...

Future Cardiol. 2010;6(3):325-342. Some variables listed are relevant irrespective of the population undergoing testing, while others are only valuable in unique patient populations. Exercise HR ...