Nothing really but a little pinch. Your stomach a flexible sac-like organ. You can sort of mold it to be anything. Now that is just technically speaking. It's very flexible. You have your layer of fat that is also protecting it. Nothing bad/good is going to happen. If you are pregnant. You might have a small prob. ;) Won't increase/decrease anything.
abosrption
No
Something happens.
it is because of the peristalsis
Esophagus
It will push out, if you are breathing from the diaphragm.
It si dissovled by stomach acid.
If you push it hard maybe it was just pressure that caused pain but if you pushed your stomach gently maybe your stomach is cramping just tell a trusted person and see what they say
Your stomach may hurt after doing push-ups because the exercise puts pressure on your abdominal muscles, causing them to contract and potentially strain. This can lead to discomfort or soreness in the stomach area.
You need to hold your stomach in when doing crunches. If you push your stomach out the muscle will shape that way.
the gastric juices in your stomach eat the stomach wall and you will die
No, peristalsis is the wavelike muscular contractions that help move food through the esophagus and into the stomach. The trachea is the airway that leads to the lungs, and peristalsis does not occur in the trachea to push food to the stomach.