Equal Ratio Breathing is exactly as it sounds. The inhale and the exhale are maintained at the same length.  Counting in one’s head to about 4 is about the right length to have a deep but relaxed breath.  Your count may only be 3, or something higher. Find the interval that feels full and comfortable to you.

Use this pranayama to sooth, calm, and center the mind.

Sama Vritti (Equal Ratio Breath)