By Michael Marshall Orangutans scratch themselves when they see others do itManoj Shah/Getty Among orangutans, scratching is contagious – just as yawning is among humans. When an orangutan sees another scratch, they often start scratching themselves. However, the behaviour differs from contagious yawning in one crucial respect. Humans catch yawns more readily from close family…
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JUSTIN STEELE 4 min read THE WAY MOST guys go about core training will set themselves up for disappointment. They crank through countless situps—but that only trains one function of the core, trunk flexion, and it's easy to get sloppy with form as the reps pile up. You'll need other exercises to build strong, functional
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