Researchers from Queen’s University in Kingston, Ontario, and the University of Ottawa had 21 individuals perform three weeks of intervals and three weeks of endurance training. In the beginning of the study, a third of the people from each group didn’t respond. However, when the non-responders switched groups, they showed a significant improvement in their V02 max.
Why A New Exercise Routine Makes You Unbelievably Sore You were so enthusiastic when you started the month. You signed up for every class that sounded fun: HIIT, bikram, and rowing in one week? Sure, what could go wrong? A lot, it turns out: There are over 600 muscles in the human body and suddenly […]