Markus A. Kassel book content ratings

Content ratings for books by Markus A. Kassel. How content ratings are chosen

• Cheating Father Time: 77 Anti-Aging Hacks to Stop the Clock and Live a Longer, Healthier and More Fulfilling Life: (Build the Habits to Age with Grace and Become Sharper & Stronger by the Year!) PG
• Eat like a Real Man: Paleo Diet Recipes for Guys Who Want to Be Big and Lean: (Build Muscles, Lose Fat, Live Free & Healthy!)
• Superhero “Armor-Plated” Chest: How to Use Push-Ups, Dips and Advanced Calisthenics to Add Inches to Your Pecs & Develop Explosive Upper Body Strength: ... Bodyweight Exercises for Chest Mass/Power) PG
• Superhero Killer Confidence: Easy Actions to Boost Your Self-Confidence through the Roof, Overcome Your Fears and Break through Any Barrier: (Become Unstoppable and Live Life to the Fullest) PG