A strength training expert, who runs the 'hardest workout in NYC,' shares 3 habits to build muscle without working out on weekends
James McMillian, the president of Tone House in NYC, works out twice a day on weekdays and follows a simple, high-protein diet.
James McMillian, the president of Tone House in NYC, works out twice a day on weekdays and follows a simple, high-protein diet.
This article was originally published at: https://www.businessinsider.com/build-muscle-strength-tra...