Disruptions in sleep quality, continuity, and timing can trigger or worsen psychiatric symptoms, and vice versa.

What they found: There’s a reason that research finds that Nobel prize winning scientists tend to have more hobbies than those who are good but not quite great scientists. In this study, they researchers looked at how leisure activity impacts our work. What they found is that leisure activity boosts work self-efficacy, potentially helping us perform better in our day jobs. But there was an important caveat. It wasn’t just about having a hobby, the impact of workplace self-efficacy was highest when people took their hobby serious and it was different enough from their actual work. In other words, if their hobby was too similar to their work, it actually hurt work self-efficacy.

What it means: Common advice tells us to get obsessed about something to be great at it. Be the football coach who only loves all things football. Well…research might point us in another direction. In this case, we need activities and hobbies that are different. Activities that allow us to turn our brains away from whatever it is we do during our day job. Diversify your experiences and pursuits.

What they found: In this study, researchers compared sleep versus easy aerobic activity (Think: an easy jog or bike ride for an athlete), in rugby athletes. They found that sleep extension had a faster recovery in cognitive performance, but aerobic activity led to quicker neuromuscular function and autonomic recovery.

So What? It’s important to note that this was a small study looking at a single nights sleep. But it does provide something novel and useful. If you need to get ready for game or big performance, of course you should prioritize sleep, but you shouldn’t neglect some easy aerobic exercise. Perhaps this is the reason why so many runners go for an easy shakeout jog the morning before a race?

Is there an optimum time to eat dinner to reduce the risk for Type 2 Diabetes? This study on 7000+ adults found eating dinner 3h or longer before bedtime is associated with reduced risk for type 2 Diabetes.

Longer wakefulness leads to a statistically significant decline in mood (p<0.001)

Physicians who take few vacation days each year are more likely to face burnout

Sleep regularity, the day-to-day consistency of sleep–wake timing, can be a stronger predictor for some health outcomes than sleep duration.

Travel can cause misalignment of internal rhythms, resulting in lower performance, reduced cognition, poor memory storage, and poor emotional regulation.

An entrepreneur’s physical & mental health, along with the physical & mental health of their spouse, impacts the chance of startup success.

Reduced daytime light exposure was associated with increased sleep-wake fragmentation. Afternoon light therapy might be more efficient in consolidating sleep and wake in older adults.

High strain exercise / sports late at night interrupts sleep.