> somebody who exercises 30 minutes 6 days a week is better off than someone who exercises once for 3 hours. My experience here is that it is more subtle. "Be

> somebody who exercises 30 minutes 6 days a week is better off than someone who exercises once for 3 hours. My experience here is that it is more subtle. "Better off" depends on your goals. For losing weight, one or two sessions of 75-90 minutes or longer per week seem to have much more effect for me than 30 minutes every day. (Borne out over years of trying different things; I'm in my 50s.) For increasing my VO2max, 25-30 minutes of aerobic exercise every single day for weeks on end worked well, but it was hard to maintain that discipline long term. (I was very surprised at the effect of every day, as opposed to, say, 4-5 days a week. It seemed like I was getting a lot more than an extra 50-75% benefit.)