Why Strong Glutes Improve Underwater Dolphin Kick Speed

By Olivier Poirier-Leroy on SwimSwam
One of the biggest mistakes I made over the years was treating the dolphin kick purely like a leg extension exercise.
I obsessed over the downkick and how hard I could drive it with my quads and knees.
Naturally, this meant endless reps on the leg extension machine at the gym. Leg up, leg down. Move that weight stack.
But not a lot of great dolphin kicking broke out as a result of this training. Turns out, this was only solving part of the challenge.
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