If your day can pretty much be summed up as time shuffled between long hours spent sitting at your desk at work, sitting in your car, and sitting in your house, there's a good chance your hip flexors ...
The other "show me" muscles include the abs, pecs, and biceps. Quads' counterparts—the hamstrings, the muscles that run along the back of the thigh—are underworked, ultimately leading to imbalances ...
Want to do strength training while recovering from an injury? Go for isokinetic exercise, which can strengthen muscles, and assist in rehabilitation after an injury.