Casio is adding another option to its high-end G-Shock lineup with the MRG-B2100D-2A. It’s a luxury timepiece that builds on the familiar 2100-series design. The watch draws inspiration from the ...

This successor to the G'zOne Type-S is smaller and lighter, while upgrading to faster PTT and data, higher-resolution display and camera, plus adding an electronic compass, music player, memory card ...

Circadian rhythms are 24-hour cycles determining periodicity in various physiological processes, including nervous system activity and hormone production, which influences sleeping and feeding ...

What Is a Normal Sinus Rhythm? Normal sinus rhythm is when your heart beats in a regular, organized way. Your body has a built-in pacemaker called the sinoatrial (SA) node, or sinus node. It uses ...

Going to bed earlier and waking in the early morning often matches humans’ natural circadian rhythm, or internal clock, which tends to follow daylight patterns. Most adults need at least 7 hours of ...