The question: I swam and walked a lot all summer. I love doing both, but I just went back to the gym and I can hardly lift any weights. I was expecting to be stronger and more fit from being active all summer, but I seem to have gotten weaker. What gives?
The answer: The body is highly adaptive – almost breathtakingly so. Unfortunately, the adaptations are very specific to the stimuli you give it (this is known as the principle of specificity). READ MORE