In Mind Your Body, personal trainer to the stars Joel Harper explores the crucial connection between meals, moves, and mindset: meals to keep you nourished, moves that can be done in the comfort of your home, and the mindset to keep you motivated, inspired, and thriving. He provides a “whole-istic” three-step program that will help you quadruple your weight loss, maximize your workouts, and boost your happiness and energy levels—in just fifteen minutes a day.

“I have always hated working out, and Joel has suffered my bad attitude for years. But I love how I feel when I leave a session with him, and I love the results even more. His strategy is tailored to lengthen, strengthen, stretch, and tone. Whether you’re a workout fanatic or have skipped the gym for a few months—maybe years!—this program will challenge and reward you. That’s the power of Joel.”—Daphne Oz, cohost of The Chew

“I’ve never exercised as efficiently, intelligently, or thoughtfully as I have with Joel. In fact, it begins with his client’s thought process—Joel’s workouts are from the inside out. I’m definitely stronger because of my workouts with Joel Harper.”—Ilana Glazer, comedian, actress, and star of Broad City