You need to learn to stop comparing yourself to others. Easier said than done, but, you need to realize that everyone is different. I'm still trying to work on this myself because I always see other classmates doing so well and getting high marks and it makes me feel down about myself. But, I have been working on reminding myself that I am different from them and I have my own journey. My classmates are not me and I don't need to be like them. I'm now focusing on myself rather than comparing myself to them. Focus on yourself more and stop worrying about other people. Try mindfulness meditation to help you calm down before and after the test. Try not to pressure yourself too much before the test. Again, easier said than done but it would really help. If it helps, try going to therapy.
Crunches
In my educated opinion, crunches would be the best choice out of these options to build strength. A one mile run builds cardio, sit and reach and gymnastics build flexibility and some strength, crunches is strictly abdominal strength.
Answer:
Visceral fat or active fat
Explanation:
Visceral fat is fat that wraps around your abdominal organs deep inside your body. You can't always feel it or see it.
Exercising burns fat, and gets you more sleep. Not only that, but
exercising expands muscles, and is just an overall healthier lifestyle.
I hope that answered your question :)