Resting heart rate will be decreased, because your heart and cardiovascular system are being worked out, therefore increasing the muscle tissue within the heart and thereby making it stronger, which makes it beat more powerfully and yeah. So Resting heart rate is the correct answer
The barriers to exercising are classified as excuses. Excuses like ones physical attributes shouldn't be an excuse to not exercise but a motivator. Time management is another barrier that is classified as an excuse. Even if someone has school or work there is a part of the day that can be used for exercise. Exercising doesn't always have to be an hour in the day.
Well, you have two options, either throw up now and not worry about it later (this relieves pain too), otherwise, just drink something and have something to eat. Don't try anything too sugary like one of those Starbucks unicorn drinks (I don't know if they still exist but hey, just a warning!). Try a soda or just plain water. For something to eat, try a corndog or something that you like. Most people like pizza, so try a nice greasy pizza!
Im guessing walking because you walk between classes.
Fats and carbohydrates.
hope this helps!!