anxiety

ENGAGE IN A PHYSICAL ACTIVITY

workout or by participating in sports, you will find that getting your body moving helps you to literally sweat off tension.

DO SOMETHING YOU ENJOY

Hobbies can help you relax.

RELAX YOUR MIND AND MUSCLES

Do some yoga

JUST BREATHE

Take a deep breath in and hold it for five seconds. Now let it out.

Relax your mind and muscles. ...

Regular Meditation before study for 15 mins at least will help a lot.I do it regularly and it helped me a lot.and as Rahul said Deep breath at regular interval will keep your mind calm and cool.