Description For those who are into sports and exercise, they live it – regretting every day they cannot put in a workout, pushing themselves a little harder, a little faster, a little further with every day. But any coach, personal trainer or personality worth their salt will tell you the most important part of an exercise routine is the rest and recovery phase, where the repairs to the tiny tears of muscle fibers and impact to the joints make the body even stronger for the next round of exercise, the next push forwards.