Normal human breathing at rest should raise the belly, not the chest.

To relax during a particularly stressful moment, take three slow, deep belly breaths to interrupt the fight-or-flight response.

Belief in the benefits of controlled breathing goes back centuries.

Central to ancient Hindu philosophy was prana, described as vital “airs” or “energies” flowing through the body. Stemming from that belief, yoga was built on pranayama or breath retention.

• Find a comfortable place to sit or lie down.
• Breathe in through your nose and fill your lungs from the bottom up, first expanding your belly, then your chest, and finally raising the collar bones.
• Pause.
• Then gently exhale from top to bottom, using your stomach mu...

Breathing is at the core of ancient (and currently trendy) mindfulness practices, from yoga and tai chi to meditation.

However, studies suggest that breathing exercises alone, derived from those ancient yoga practices, can be good for the body and mind. 

It involves filling the lungs to the max and goes by various names like belly or diaphragmatic breathing.

It has been linked to improved cognitive performance, lower stress levels, and lower blood pressure.