If you've ever seen a personal trainer or done any rudimentary research on an effective exercise routine, you know that rest and recovery are a crucial part of getting--and staying--in shape. However, this idea of "rest" takes many forms. Shortening workouts, trying different exercises, and even skipping your workout altogether are all options that can provide you with some recovery benefit. And even if you choose to take a full rest day, you can optimize your body's recovery with proper…
