I did 30 Dive bomber pushups in my gym session (hoping to work this up to 100), though I thought these were Hindu pushups until I did some browsing to check my form and discovered many variations in technique which just confused me more Basically these were: Hindu starts with usual push up position but feet wider than hip width, hips up, shoulders back, back flat, body in Vee shape. Bend arms and imagine dipping under bar to arch back then push to a flat back. Repeat Divebomb same starting position but after the arch back reverse the whole movement to dip under the imaginary bar going to a flat back. Repeat Judo same as Divebomb, though I've seen it with narrower feet position. Which style of pushup would you say is best as a core exercise and how wide would you have the feet apart?