In TODAY.com's Expert Tip of the Day, a trainer reveals the equipment-free hack to know you're exercising intensely enough.

Strengthening muscles around your armpits can help tone your arms. But for armpit fat loss, it’s better to focus on overall weight loss through cardio and strength training. There’s a misconception ...

Visual motion information is essential to guiding the movements of many animals. The establishment of direction-selective signals, a hallmark of motion detection, is considered a core neural ...