How Often Should I Exercise?
The benefits of any exercise program will diminish if it's disrupted too frequently. A "stop-start" routine is not only ineffective, but can cause injuries. Being consistent with exercise, therefore, is probably the most important factor in achieving desired results.
People often assume that more is better. Wrong! Doing too much too soon or performing intense exercises on a daily basis will have deleterious effects, such as muscle/tendon strains, loss of lean tissue, and fitness-level plateaus.