I tried to change my body composition for a year. Here are 3 things I did to cut my body fat mass by 7% without hating my life.

Tech Insider : Business
Woman exercising; woman getting body composition analysis
Body composition analyses helped me track my progress in losing fat and gaining muscle.

Julia Pugachevsky

I took a VO2 max test while sprinting on a treadmill. It taught me how fast I should run to burn fat and build muscle.

Tech Insider : Business, Technology
The author is running on a treadmill
I wore a mask to track how hard my heart was working during strenuous exercise.

Corrie Aune for BI

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