In 1995, Tom Iselin, a lifelong heath enthusiast, top athlete, mountain man, and well-known social entrepreneur, set out to simplify the overwhelming world of healthy living. Convinced Americans were fed up with bogus health claims, strenuous exercise regimens, restrictive diets, and contradictory information, he wrote Lite’n Up! — a lighthearted, practical book about living healthfully without the guilt, gimmicks, or grim faces.

The first edition sold 52,000 copies, earning praise for its emphasis on moderation, common sense, and the power of adopting healthy habits. Now, in 2026, Tom has updated the book with the latest health research while preserving the humor, clarity, and down-to-earth style that made it a classic.

Why Lite’n Up! Works

Unlike most health books, Lite’n Up! doesn’t associate good health with being thin. Tom points out you can be slightly overweight and still be healthy. Instead, the book focuses on building habits that promote physical, mental, emotional, and even spiritual well-being—habits that leave you feeling energized, happy, and alive.

And here’s the twist—Lite’n Up! doesn’t require special food, expensive counseling, or eating like a monk. You can still enjoy cheesecake, candy bars, French fries, and vacations. (Yes, even chocolate doughnuts—Tom’s own admitted weakness.)

Why It’s Practical

Listeners don’t just get theory—they get hundreds of tips, techniques, and suggestions they can use immediately. The workbook format makes it easy to skip to a section for a dose of inspiration or a quick how-to. Both Lite’n Up! and the Healthy Habits 300 program are portable—ideal for taking to work, on vacation, or even to the kitchen table when temptation strikes.

The approach is refreshingly forgiving: you don’t have to count every calorie, log every minute of exercise, or agonize over every fat gram. As Tom says, “You don’t have to be exact to be right—consistency in the simple things is what matters most.