What are horse squeezes and DLD blasters?

What are horse squeezes and DLD blasters?

Tutorial forum has no info on them.

Horse 440’s are an exercise that is designed for girth and shouldn’t really be attempted without at least 2 months PE under your belt, they are an easy way to cause injury if you aren’t careful.

DLD blasters are a routine of simple and inverted V-stretches combined with kegelling. They are useful for people who don’t want to create a personalised stretching routine.