4 of 5
Keep your weight behind the seat to keep you on the bike.
Riding down steep descents is all about keeping your weight back. Moving your hips further back/behind your seat will redistribute your weight for optimal balance and handling. This means your pedals, not your seat, will be carrying most of your weight. As you progress to steeper descents, you will find yourself getting further behind the seat to keep your body on the bike rather than tumbling down the hill.