Quote:
The body is very good at adapting to consistent physical activity, but cannot always react quickly enough to protect itself from a sudden influx of free radicals produced by infrequent high intensity exercise. Exercising several times a week at a moderate, comfortable intensity from which you can recover easily is the best way to increase your body's natural antioxidant defences and reduce oxidative stress. However if you are a weekend warrior who does little or no exercise during the week but engages in intense exercise at the weekend, you may be doing more harm than good
Quite a relevant section from Oxygen Advantage there. Suggestion is that tissue damage can occur if you don't have that solid base that people talk about. I'm the weekend warrior!