Brahmachari complex.

And later as in year are muscles weak, and step changing till aging, and loosing  vertebra flexing, he loosing his natural position, and organism is weak and organs destroys. Here are a few exercises by a Indian yoga s Brahmachari,they are strengthening muscles of legs.
And fighting with preliminary aging.
1.Stand up, kegs are together, low hands, breathe in through nose, in jump separate legs in sides,stand up on the toes,and rise hands up, breathe in,also with jump return back, not bending knees,hands with touching hips.
Adults for  and in weak by diseases as to behind with three repeats, leading slowly till ten, and who are young as trained are doing till till ten times repeats,rising till 30 .
2.Stand up, legs together, hands stretched to the front, breathe in through nose,slowly doing as half squat, as hips for a floor parallel, on breathe in to delay breath and keep pose how much you can, feet's are on the floor, knees are together, if on the begin is hard to breath delay, thus to breath normally, as slowly habit to delay, which is not hardening in you.
Breathe out return back, repeat are 7 times.
3.Stand up, legs together, hands down, rise on the toes and stretch up hands in the sides , on breathe in slowly squat, separate knees in sides, feet's are from the floor and touching with each other, delay breath on this pose,how much you can, not till bad breath, breath out slowly return back,repeat are 7 minutes.
4.Stand up, and squeeze hands in fists, fingers big are to inside,on breathe out through nose deeply is to sit, rising to the front hands with palms down, feet's are on the floor, knees are together, delay breath, breathe out, return back, and with hands drawing a half ring to the top and down, repeat are 7 times.
5.Stand up, legs are together, hands down, rise is on the toes are doing swing moves to the top and down, not touching are heels to the floor,repeat are 20 times.
6.Stand up, legs are together, hands in sides,rise on the toes,sit, and body weight transferring on the toes,leave this pose a how much you can, without over loading,repeat are 7 times.
7. As in pose,like eagle, sit is on the left leg, a put right hip on the left and twins behind a left shin of right, a right leg fix is for left shin, left hand twin her under elbow of right, with palm put to the left cheek, and palm of right hand is to the chin.
Keep this pose not to aches, with a natural breath, and form an eagle pose is sit on  the right leg.
And hardening causing an exercise in adults, do not doing his, and latest are enough for a strenthening and developing legs muscles.And doing on begin are breath exercises,and if you are worry about your spine condition thus doing are exercise as Hello for the sun  and exercises for legs,which are entering in the morning gymnastic as after an usual exercises.