Why do our mussels burn when we exercise?

How can I effectively perform hamstring lunges to target and strengthen my hamstrings? Can an apple make you lose or gain weight? What is an alternative exercise for the one arm row? What are the benefits of incorporating recomp supplements into your fitness routine? What is a form of exercise involving stretching and breathing to strengthen the abdominal core? What is the proper technique for performing cable crunches to effectively target the abdominal muscles? How can I effectively perform cable rows on a cable machine to target my back muscles? What is the recommended lifting routine at Planet Fitness for beginners? How big of a trampoline should you get? Is there any difference between the treadmills at the gym and the ones that I can buy for a few thousand dollars at a sporting goods specialty store? Is it bad for me to take 5 deca zol if im 18? What is the average bicep width measurement for individuals in a healthy population? What are the most effective exercises for managing a baker's cyst in the knee? What are the benefits of incorporating a 5x5 warm up routine into your workout? What are some effective exercises to strengthen the hamstring muscles using a bench? How much should you be squatting at 15? How many calories are in one scoop of protein powder? Why do your breasts hurt after running? What does walking high mean? Exercise?