If you have been following the yoga series here, I can suggest a few from the list: you may to have track them back, by going through the links given here. For upper body, from this set you must try kandharasana (shoulder pose). This can be done both as repeats. Or held for long. You will feel the muscle responding almost immediately! So don't over do it. Build stamina, so you can do 30 repeats/ or hold for half a minute at one time. You find results immediately. From earlier sets you must try also navkasana or boat pose. Here, you must learn to hold it for longer, from a few seconds initially to one minute or more, then after six months, to two minutes, or so. It is very powerful. Again, parvatasana (mountain pose, part of the surya namaskar set and also referred to as inverted-V pose). Here you may again strive to hold the pose longer, following the same stamina building schedule I suggested above. This will tone the entire legs, back of the legs, thighs, inner thighs superbly. It also tones the abdomen and upper arms: all difficult regions to tame:) If you follow this for four-six weeks it should show results. Keep us posted about the experience...