Those long runs, hikes, or bike rides feel great while you’re moving, but they can leave you feeling really sore the following day. To ease your pain, don’t skip working out the next day since light exercise gets your blood moving, which can help heal microscopic muscle tears. It is those tiny tears, not lactic acid, that create sore and tight muscles. The day after a difficult or longer-than-usual workout, your body will appreciate a light jog, short walk, gentle stretching, or some moderate strength training exercises. Try it and see.