Arm, core muscles, and Legs.
Internal rotators and flexors of the shoulder, extensors of the elbow
Shoulder muscles are used when throwing a football. They give the arm support and are needed during the actual throw. In the throwing motion the triceps and biceps are used. The core muscles are used to help the thrower stay balanced.
9 big muscles are used to throw a ball
The muscles that are used when snapping a football are all in the arm. More specifically, the forearm muscles are heavily used.
Many muscles are used to throw a discus. The quads are used for power and stability, the abs are used for turning and gaining power, the muscles in the arm are used during the actual throw.
most importantly your calf muscles
Most of them.