This Zero Gravity position will be able to provide a much deeper tissue massage. When reclined in this position, the pressure is relieved off of the back enhancing the massage experience. This perfect position aligns your back relative to your thigh at an optimal level of comfort. When reclined into the zero gravity position, the complete weight of your back is virtually supported by the backrest. With this feature, it improves spinal decompression and decreases muscle tension of the spine. There are 2 stages of zero gravity, the 2nd being more reclined. When reclined fully, to where your legs are higher than your heart level, the therapeutic effects are incredibly effective and may be felt immediately.