Try the wii fit ones. Dont have wii fit?OK, try a tree pose and the bridge. These can be done to tone your back and torso.
Missionary.
Some simple yoga positions include upward facing dock, downward facing dock, plank, warrior position one, warrior position two, child's pose, cat pose, and dog pose.
It helps your posture
surya namaskar vrach aasan shav aasan mayur aasan but surya namaskar is a compleate one