The only time you should be sitting down on a bike is through corners or flat sections that require more traction. Standing up is essential because it lets the bike work under you. If you’re sitting down while going through braking bumps you’re going to get thrown around. If you’re standing, then only the suspension on your bike while take the impact and make it smoother for you, the rider.

When Braking stand up and shift your weight back. Do not sit down while braking. When Braking is completed and you’re entering a corner move foreword on the bike and get into your cornering body position.