Hamstring Tantrums I like to include these hamstring exercises for both my ACLR and hamstring strain patients during the mid-late stages of their rehab to improve their hamstring recruitment and capacity to assist their running. I suppose you'd call them swissball kicks, but I like to call them "Tantrums" 🤣🤣. FYI: swissball kicks (Tantrums), particularly the prone version, has been shown to have one of the highest levels of hamstring recruitment when compared against other common hamstring reh