Try "box breathing". The technique, outlined below, is popular among Navy SEALs and only takes five minutes:

1. Inhale for four seconds.
2. Hold the air in your lungs for four seconds.
3. Exhale for four seconds, emptying all of...

It's called box breathing or four-square breathing.

Here's how it works:

• Breathe in for four seconds.
• Hold the air in your lungs for four seconds.
• Exhale for four seconds.
• Hold your breath, lungs emptied, for four seconds.

Box breathi...

A. You’re gasping for breath
B. You have trouble getting back to sleep
C. You remember feeling paralyzed while asleep
D. You have an acidic or sour taste in your mouth
E. You have a leg cramp