If finding the time to head to the gym is stressing you out then this
roundup of studies from
WebMD will please you. See, the thing is, it's not always quantity that matters, but the qualitity. And in the case of exercise the old adage is true, "something is better than nothing."
Everything, it seems, works in cycles and your workouts should too. It is a good idea to modify your workout routine in terms of length, intensity and activity in 2 to 3 week cycles.
Every two weeks, I like to vary my workout in terms of duration and intensity since I try to mix up my cardio methods weekly.
