Drugs and alcohol are NOT good tools for coping with loss. If anything talking with friends and family can help cope with the loss. Also getting outdoors and getting active can help keep your mind off things.
Muscles move body parts by contracting and then relaxing. Muscles can pull bones, but they can't push them back to the original position. So they work in pairs of flexors and extensors. The flexor contracts to bend a limb at a joint.
