Use a foam roller.
This is a great way to relieve stiff muscles, but it's also a discomfort inducer, since it's immediately painful. You can use a roller to massage your shins, rib cage, neck, lower back, hips, IT bands, lats in your upper back – basically, anywhere that's tight. I look for places that hurt and target them with the roller – it breaks up that tight tissue and helps massage out toxins, just like a good session with a therapist can. I even use it to adjust my spine by rolling on it first thing in the morning until I hear a pop. I have a regular white foam roller, a black one that's a little harder, and sometimes I even use a plastic PVC pipe. You'll feel a little like 'Kill Bill' rolling on a pipe, but it's great for your feet.