The type of workout you do, and how your body gets its energy to fuel that movement, helps define these different forms of exercise.
De Quervain's tenosynovitis (also called de Quervain's disease) is a condition that affects tendons that attach to two muscles of the thumb—extensor pollicis brevis and abductor pollicis longus.1 This condition typically develops from repetitive use of the thumb for activities such as twisting and pinching, but the cause is not always known.
Pain on the outside of a person’s foot can occur before, during, or after activities such as walking. It can make standing or moving around difficult. Possible causes include joint or tendon inflammation and small fractures.
Lower back pain is very common. It usually develops due to overuse or a minor injury, but sometimes there may be no obvious cause. Lower back pain can also be a symptom of an underlying medical condition.
The deltoid muscle is the main muscle of the shoulder. A triangle-shaped muscle, it helps move your upper arm and stabilizes the shoulder joint.