PROPER CRUNCHES TRAINS YOUR ABDOMINAL MUSCLES AND NOT BURN FAT.

CORE CRAMMING

Myths : Crunches are done to burn abdominal fat

Crunches or sit ups normally done to reduce the abdomen fat as to decrease their waist size and to become slim, but in reality abdominal crunches train and strengthen your abdominal muscles (i.e Rectus abdominal and Transverse abdominal and Obliques) and not burn that abdominal fat literally. In reality target fat reduction as in this case around abdominal or stomach is hard to be possible, actually fat burns is Overall and full body fat percentage decrease together and its not like if we were doing abs crunches it will lead us to decrease the abdominal fat, thus target fat reduction is not possible. 

Fat reduction is Overall and full body fat percentage decrease on a whole and its not like only from stomach and not from biceps,or only target to triceps and neck region and not around thighs..so thus fat will be reduced from everywhere and not just from where we are exercising.

Crunch ABDOMINAL exercise

Rationale behind Crunches:

Crunches are abdominal exercise meant for abdominal strengthening and to increase the strength and power of abdominal muscle mainly Rectus abdominal the superficial abdominal muscle and if done properly with engaging core first and squeeze your stomach in and then perform crunches along with tight abdominal will give you best result.

PROPER Crunches : position and movements

Starting position:

Crunch position starts in supine position or lying on your back with knees bend and feet together and placed on the ground and arms either on side of body or cross arm over your chest or with bent elbow and palm close to your ears(as in figure) with increase in intensity and more resistance as we move our hand toward head. 

Procedure:

Crunches starts with sucking your stomach in and to engage your core in the starting position (written above)

and then use your abdominal muscles to raise your thorax or upper body from the ground above so that scapula( bone on upper back ) is off the ground , or raise till you bend maximally in sit-ups, without moving your legs and with engaging your core as to tighten the stomach in and do the exercise properly and repeat.

End position:

End position is when your body is in the air and elbows bent and try to keep them away from the body and don't pull them inside closer to chest (as in figure) and maintain the core tightness and breath out.

Summary, crunches with core incorporation in proper posture helps to strengthen the abdominal muscles and not burn the target stomach fat, so do abdominal crunches for strengthening your muscles and with increase in body metabolism and calories requirement during and after exercise help you lose fat overall from the body. Remember fat always increase and decrease in Total as it increase according to Lifestyle, body type and food or diet intake and via blood stream. so stress on exercise which increase the body requirement for calorie consumption ,this will eventually help to burn fat.