Genitalia size does have some evolutionary benefits, but men remain a bit touchy about the subject. Breakthroughs, discoveries, and DIY tips sent six days a week. Human history is full of juvenile jokes, odd stereotypes, and outright harmful misinformation about the size of a man's penis. But the long and short of the real science behind size suggests that men themselves are more likely than women to get riled up about the subject . According to a study published today in the journal, men routinely feel more physically and sexually threatened by well-endowed rivals--regardless of how women feel about the subjects.

Technology Best of What's New 5 personal care products that solved real problems in 2025 We may earn revenue from the products available on this page and participate in affiliate programs. In a market saturated with wellness products that promise to fix your whole life but rarely deliver much of anything, this year's personal care winners stand out for actually solving real problems. The 2025 class represents genuine inclusivity and thoughtful design--from a breast pump that goes old school to level up its wearability, to world-class headphones that double as hearing aids and workout coaches. Instead, they address overlooked challenges with smart engineering: making fragrance bottles easier to grip, transforming sleep routines for exhausted parents, and rethinking recovery gear so athletes can soothe strained muscles while on the move. Each winner proves that meaningful innovation happens when companies consider users' actual needs--and use that knowledge to make good products great.

As winter approaches and daylight saving time has ended, many people are bracing themselves for shorter days, colder weather and what's often dismissed as the "winter blues ." But these seasonal shifts are more than a passing inconvenience, and can disrupt people's energy, moods and daily routines . Seasonal affective disorder (SAD) is a condition that heightens depressive symptoms during the fall and winter months, while the "winter blues" refers to a milder, temporary dip in mood. Although the exact cause of SAD remains unclear, it's thought to be linked to reduced exposure to natural light during the fall and winter, which can disrupt our circadian rhythm. Lower light levels affect brain chemistry by reducing serotonin -- a neurotransmitter that regulates mood, sleep and appetite -- while keeping melatonin elevated during daylight hours, leading to sleepiness and fatigue.