The interior lining of the lungs contains very few pain receptors. However, the surrounding tissue and outer lining can feel pain. That's why lung pain after exercise may be related to issues elsewhere in your chest cavity, including your heart.

Lunges strengthen the glutes, quadriceps, hamstrings, core and stabilizing muscles of the leg -- while also challenging your cardiovascular system. The lunge is an exercise that works the entire lower body and emphasizes joint mobility, strength and flexibility, according to Boston Performance Coaching.