Focus on leg strength and core, along with training that bridges 100m raw speed and 400m speed endurance.
Excessive leaning onto the track wastes energy; keep the body parallel to the lane. 200 MetersHD
Not staying in the middle of the lane can cause you to run a longer distance or drift outwards. Preparation and Training Focus on leg strength and core, along with
Position the dominant foot in the front block and practice starting from a stagger. If you can tell me: Focus on leg strength and core