Study: Lifting weights for 3 seconds a day improves muscle strength

Muscle strength increased more than 10% after performing one 3-second "eccentric" contraction daily, Monday to Friday, for four weeks, showing a small amount of exercise stimulus is still effective.

Michaels was the coach of the Red Team on "Biggest Loser" on-and-off for 10 years starting in 2004. She officially left the show in 2014. "Biggest Loser" was on-air for 18 seasons and concluded in 2020.

"To be totally honest with you, at the moment I'm choosing my battles because there are a lot to fight. I will absolutely take on one of these. The question is, you can't fight 10 Goliaths at the same time. So, I have to determine what I want my legacy to be and that is going to be a result of which fight I pick," she said.

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