Your posture should be slightly forward with your core engaged and ready to push hard from the start. The assault bike doesn't resist gently like a regular bike — it gets harder the faster you pedal, with increasing difficulty the harder you push. Real effort feels like sustained burning in your legs and quick breathing right within the first minute. Don't sit back and coast; lean slightly forward and drive the pedals with real intention and power. The harder you push, the more it pushes back. This isn't about comfort.