The most common injuries for students are tendinopathies, especially in gymnasts. Tendons are particularly prone to injury because repeated minor aggravations can lead to chronic conditions like degenerative tendinitis. SAM (Sports and Active Motion) has helped athletic departments at various institutions treat tendon conditions affecting the shoulder, bicep, elbow, knee, Achilles tendon, and plantar fascia. Football commonly causes bruising and muscle strains in the legs as well.