african american man guy in gym doing sport exercise with dumb-bell curl biceps workout sportsman athlete lifting up

african workout man dumbbell injury biceps american guy gym doing sport exercise dumb bell curl sportsman athlete lifting up heavy weights feel sharp pain joint hand elbow painful trauma strong athletic ethnic health male hands arms ache treatment inflammation hurt stretching ligament cramp discomfort sore touch tired arthritis accident suffer problem exercises damage sprain tendon strain healthy lifestyle achievement activity training bodybuilding bend effort fit curls deadlift dumbbells iron lift exercising fitness sportive functional instructor steroids muscle strength muscles muscular