They found that people who usually sleep on the left side of the bed are 4% more inclined to wake up in a good mood and nearly 10% more likely to have a positive outlook on life.

The left atrium is one of the four chambers of the heart, located on the left posterior side. Its primary roles are to act as a holding chamber for blood returning from the lungs and to act as a ...

Cats prefer to sleep on their left side. This is the conclusion drawn by an international research team that analyzed several hundred YouTube videos of sleeping cats. The researchers see this bias ...

Credit: Current Biology (2025). DOI: 10.1016/j.cub.2025.04.043 Perceiving dangers with the left visual field brings advantages The group analyzed 408 publicly available YouTube videos in which a ...

One thing you may have noticed is that your cat likes to sleep on their left side when they’re in one of the best cat beds or snoozing on the couch. A new study has found that cats prefer to sleep on ...

Parkinson’s disease often begins asymmetrically, affecting either the right or left side of the body first. Researchers from the University of Geneva (UNIGE) and the Geneva University Hospitals (HUG) ...