I was an active runner for 10 years, then I burned out. Switching to walking helped me lose fat and feel energized again.

Tech Insider : Business
runner in cornfield
I got burned out on running after my first marathon. Walking and taking more strength-training classes helped me keep in shape.

Julia Pugachevsky

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

A cardiologist shared 4 seemingly healthy habits that can lead to heart failure, from too much protein to overdoing workouts

Tech Insider : Business, Sports
A man pouring a protein shake from a blender
A super high-protein diet can lead to inflammation, a cause of heart disease.

Prathan Chorruangsak/Getty Images

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