Stress

However the working out part is good, it is very bad that you are not eating properly while working out and, its worse that you don't eat a lot of it at least.

If you eat junk food while working out, it causes your body to give up on you and literally your important body parts will stop working because of the lack of nutrition.

You need to eat a lot more, and make it a balanced meal. Having snacks on the side of eating like unhealthy foods is fine, but when it is time for breakfast, lunch and dinner, it is vital that you eat properly.