Your lower esophageal sphincter (LES) is a muscular ring that connects your esophagus with your stomach. It relaxes to let food pass through but otherwise stays closed to prevent stomach acid from ...

Welcome to Start TODAY. Sign up for our Start TODAY newsletter to receive daily inspiration sent to your inbox — and join us on Instagram! Stress is a fact of life. Add politics and a divisive ...

Mouth taping aims to encourage nasal breathing by taping your mouth shut during sleep, but evidence on this practice is anecdotal and clinical studies are lacking. Nasal breathing can humidify air, ...

While North America and Europe scramble to build the data centers needed to run 21st-century businesses, many emerging markets remain anchored to 20th-century products like steel, cement and plastics ...

Susan Russell, MD, is a board-certified pulmonologist and Medical Director of Medical Intensive Care Unit (MICU) for Northwestern Memorial Hospital's Medical ICU. Muscle strain commonly causes chest ...

Obstructive sleep apnea (OSA) occurs when your airway partially or completely blocks during sleep, causing snoring and repeated awakenings. It can raise the risk of high blood pressure, heart attack, ...

Visceral pain can be dull, whereas somatic pain feels sharp, stabbing, or poking. Common causes of chest tightness include heart disease, acid reflux, or asthma. It's important to get medical care ...

Fitness coach Jeff Cavaliere has an ab routine that works for even the busiest gym-goers. On Feb. 1, 2026, he broke down his ...