Last time I went skydiving I experienced something like this. I was doing a pair jump and you do it in a harness that’s attached to the skydiver with the parach

Last time I went skydiving I experienced something like this. I was doing a pair jump and you do it in a harness that’s attached to the skydiver with the parachute. When the chute opens you slide down/into the harness and it compresses around your thighs. The first time I jumped, the instructor told me to step on his feet so he could put some slack in the harness, but this time the instructor didn’t do that, so for the whole time between opening the chute and landing I was stuck motionless in the tight harness. I almost passed out, it was pretty scary.