As the human grows his or her joints become weak. The synovial membrane and its fluid loses its function of lubricating joints. In this way the joints turns stiff and finally pains. One has to prevent this. Applying oil on daily basis is good. Give up diet that aggravates Vata Dosha. Over exercises and carrying overload must be given up.
One has to protect his or her joints from the cold weather and for that while sleeping these areas are to be covered with blankets. Stop wearing skin tight pants or bottom wear. Sports person should protect his joints by wearing some guards available in the market. One has to keep the joints moving. One has to correct certain postures like sitting in chair, bending forward etc. Sleeping on the flat surface may help preventing usual backaches.