The first steps are the most extreme, and that is correct
In the first 5 meters your body angle should be at its lowest and most forward, closer to 45 degrees than to upright, with ground contact happening nearly under your hips rather than out in front. This feels aggressive and awkward if you are used to upright running, which is exactly why so many young sprinters abandon it too soon. The instinct to peek up and check your position actually costs you force in the exact window where force matters most.

