What happens next?

How to deal with cramps when you're not home
Take deep breaths.
Deep breaths flood your blood with oxygen and can reduce muscle cramps. Breathe in deeply through your nose and out through your mouth, letting your belly relax outward as you draw air deep into your diaphragm.
You can perform a set of 10 deep breaths for optimal relaxation. This can easily be done in class or in your office.