crunches :
legs bend at knees 90 degrees. like this..
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den cup hand at ear. lift up ur body and make ur elbow hit the
knee.
and yes, leg raises also can.
do 3 sets of this.
20sit-ups.
20push-ups.
20leg raises.
20burpess.
den jog ard ur hse.
if u really want just abs, den u have to do 454984651984651
sit-ups