The bicycle is a common, yet unique mechanical contraption in our world. In spite of this, the bike's physical and mechanical principles are understood by a select few. You do not have to be a genius to join this small group of people who understand the physics of cycling. This is your guide to fundamental principles (such as Newton's laws) and the book provides intuitive, basic explanations for the bicycle's behaviour. Each concept is introduced and illustrated with simple, everyday examples. Although cycling is viewed by most as a fun activity, and almost everyone acquires the basic skills at a young age, few understand the laws of nature that give magic to the ride. This is a closer look at some of these fun, exhilarating, and magical aspects of cycling. In the reading, you will also understand other physical principles such as motion, force, energy, power, heat, and temperature.

National Geographic's Trails Illustrated Maps are the most detailed and up-to-date topographic recreation maps available for US National Parks, National Forests and other popular outdoor recreation areas. A necessity for exploring the outdoors, each map is printed on waterproof, tear-resistant material. They also contain key safety and contact information, GPS and compass coordinates, Leave No Trace ethical guidelines and hundreds of points-of-interest, including scenic viewpoints, campgrounds, boat launches, swimming areas, marine sanctuaries and wildlife refuges.

In this book Dr. McGuff shows how to apply high intensity strength training principles to the sport of BMX (bicycle motocross). Now an olympic sport, BMX epitomizes the complexity of sports conditioning as it requires strength, power and endurance in the physical realm, and involves multiple skill sets with a need for both narrow and broad mental focus. This book will prove invaluable not only for the BMX racer, but for any athlete who wants to learn how to efficiently train for their sport.

So you've got a new bike? Or just getting into cycling? Or just fancy learning more about the bike you already have? On Your Bike by Olympic champion Sir Chris Hoy is the perfect guide for children looking to make the most of their bikes. * How to choose your bike? BMX, Racer, Mountain bike? Which tribe are you? * Get the right kit. Advice on cycling essentials for riding in all weathers and safety tips to make sure you are seen on the road. * Maintenance. Step by step guides with illustrations to help you change a tyre, check your bike for wear and tear plus access to bonus video footage with Sir Chris Packed full of handy hints, fun facts, quizzes, checklists and illustrations, Sir Chris shows you how to look after your bike and much, much more.