Gymstick gym balls
Gym ball is well-known piece of exercise equipment. It provides comfortable but unstable surface for exercising. Exercise ball can be used especially for low-impact exercises that are gentle for the joints. Movements require good balance and engage many core muscles. You can have both effective and slow workouts with an exercise ball -the choice is yours! Gymstick exercise ball is also an ergonomic option for office chair. The use improves posture and the condition of core muscles preventing back pain.