Add Yahoo as a preferred source to see more of our stories on Google. One thing I’ve always loved about Jessica Biel is her refreshingly honest approach to fitness. Take her Instagram, for example.

I've been going to the gym 4-5x a week since I was 14. I've been through all the workouts, both trendy and timeless. And despite that, there is one exercise that has always alluded me, sent shivers ...

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