STRETCHING: Move the ankle joints while stretching the muscles,boost muscle sensitivity and lower leg power.Stretch and strengthen feet and calf muscles,tendons and ligaments for an effective deep stretch to reduce injuries.Prevent injury by sretching your tight calves, hamstring, hips, foot and ankles before / after workout. BALANCE: ARCHAEUS ankle balance boards provides a safe, destabilized surface to improve overall balance and increase core strength,helps you increase flexibility and restore muscle balance.increases joint stability and motor skills, safely strengthening weak ankles, knees and hips. ENDORSED BY PHYSICAL THERAPISTS: Ankle Balance Boards versatility and unstable surface design make it perfect for efficient effectively stretch muscles and fascia ,improve blood circulation in the legs. to help recover and plantar fasciitis, Achilles tendonitis, heel spurs, shin splints, and calf strains and other foot and ankle injuries and pain. VERSATILE USAGE: Multifunction