CIRCADIAN RHYTHM

This study looked at whether exercising in the morning or evening helps control blood sugar better in pregnant women with gestational diabetes or glucose intolerance. 39 women walked or stepped for 30 minutes either after breakfast or after dinner. The researchers measured blood …

This study looked at whether adding special breathing muscle training to running programs helps 10-13-year-old male football players improve their agility, endurance, and lung function. 75 boys who had played football for at least two years took part. The training was tailored to…

This study looks at whether a 90-minute afternoon nap, a moderate dose of caffeine, and a short recovery routine (stretching plus a snack) can improve evening athletic performance. Sixty elite university athletes (30 men, 30 women) will try different combinations of these strateg…

This study tested whether bright light in the afternoon, alone or with morning light, can shift teens' internal body clocks earlier. 84 adolescents aged 18-20 followed a stable sleep schedule and then lived in a lab for a week. Researchers measured melatonin levels to track clock…

This study tested whether eating 28 grams of pistachios (about 40 nuts) one hour before bedtime could help regulate the body's internal clock in 28 overweight young adults. Researchers measured melatonin levels, antioxidant activity, and sleep-wake patterns. The goal was to see i…

This pilot study tested whether limiting food intake to an 8am-to-6pm window for four weeks could improve metabolic health and appetite regulation in 16 healthy adults. Participants ate freely during that window and fasted the rest of the time. The study measured changes in appet…

This study looked at how the sleep hormone melatonin and a specific gene (MTNR1B) work together to control blood sugar. Researchers tested 23 healthy adults in a controlled lab setting. The goal was to understand why some people may have higher diabetes risk, which could lead to …

This study looked at 200 heart transplant patients to see if the time of day the donor heart was removed affects how well the patient does. Researchers compared hearts taken during the body's rest phase (midnight to noon) versus the active phase (noon to midnight). They tracked s…

This study looked at how lack of sleep and evening light exposure affect the body clocks of teenagers aged 14 to 17. Researchers used morning bright light to try to shift teens' sleep schedules earlier. They measured changes in melatonin levels and sleep patterns to understand wh…