Tired muscles are a common concern no matter what your age or activity level. Your muscles may be tired from a workout, yard work, a chronic medical condition or from rehabilitating an injury. An aquatic-based recovery workout reduces muscle fatigue and post-exercise pain, partly because the hydrostatic properties of water help decrease inflammation, according to a study in the “International Journal of Sports Medicine.” Dynamic range-of-motion exercises combined with diaphragmatic breathing also decrease muscular tension and increase relaxation. Stand chest deep in a swimming pool and perform these fluid, gentle movements to facilitate muscle recovery of your major muscle groups. Do 10 to 20 repetitions of each exercise.