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You must get your physician’s approval before beginning any workout. These recommendations are not medical guidelines but are for educational purposes only. You must consult your physician prior to starting this program or if you have any medical condition or injury that contraindicates physical activity. is designed for healthy adults 18 years and older only.

The information on this website is meant to supplement, not replace, proper exercise training. All forms of exercise pose some risks. The authors and publishers advise readers to take full responsibility for their safety and know their limits. Before practicing the exercises in this book and the accompanying videos, be sure that your equipment is well-maintained. Do not take risks beyond your level of experience, training, and fitness. The exercises in this book are not intended as a substitute for any exercise routine or treatment or dietary regimen that may have been prescribed by your physician.

Don’t lift heavy weights if you are alone, inexperienced, injured, or fatigued. Always ask for instruction and assistance when lifting. Don’t perform any exercise without proper instruction. Always do a warm-up prior to strength training and interval training.

See your physician before starting any exercise program. If you are taking any medications, you must talk to your physician before starting any exercise program, especially any intense HIIT-style workout. If you experience any lightheadedness, dizziness, or shortness of breath while exercising, stop the movement and consult your physician.

You must have a complete physical examination if you are sedentary, if you have high cholesterol, high blood pressure, or diabetes, if you are overweight, or if you are over 30 years old. If your physician recommends that you don’t use, please follow your doctor’s orders.