1, normal, pain does not affect, just like, does not affect others, it will get better gradually.

2, normal, put the steel plate and the fixed piece in, all metal, of course, you can touch it unless you are fat.

3, normal, it is caused by the inadaptability of the steel plate just released, and it will get better slowly.

4. Yes, good exercise helps to reshape your funnel chest. Do more exercise, that is, don't do too intense exercise or play weightlifting.