Box breathing is a technique where you inhale, hold your breath, and then exhale. Sometimes, holding your breath is something that can make people more anxious, so if that's something that happens for you, this might not be the exercise for you.

Belly breathing is a more mindful version of deep breathing. The reason why belly breathing works for some people is that, when we place our hands on our belly while doing so, we put almost all of our focus on our breathing and not the things around us. 

There is also some biology surrounding why this works to reduce anxiety. Engaging your diaphragm stimulates our vagus nerve, which can decrease our stress hormones.

Here is a visual for you to follow. Try to engage in belly breathing while following along.

This is a different version of box breathing. It also involves holding your breath, so be mindful of that when choosing your exercise.

The purpose of a body scan is to help you identify areas of your body that may be feeling some discomfort as well as helping us focus on what's happening in our body instead of outside forces which in turn helps us reduce stress.

Progressive Muscle Relaxation is a classic meditation that teaches you how to relax your muscles using a two-step process. First, you tense particular muscle groups in your body. Then, you release the tension and notice how your muscles feel.