I’m not really a tall person but I have long limbs and when I try to do a 90 degree it always goes over it by a little bit is that something bad or is it ok? Also on knee raises are you supposed to have your feet exactly together or just close to each other because my feet when I don’t try to focused on putting them together always kinda slide off but just a little bit I don’t know if that’s bad or good same like my other question and two more things to add are knee raises supposed to have your legs fully straightened out at the bottom position or is it supposed to be a little loose and is knee raises one whole motion or is it have the legs go up for a little bit then bend the knees then go over the stomach? I’m sorry if I ask too much because I can do full leg raises I’m just trying to do all the easiest variations first then go up like Hampton said but out all of the easiest exercises this one kinda confuses me.
I forgot to mention am I supposed to squeeze at the top or not because when I don’t ,I don’t really feel my abs it’s more so the lower half

Hey, Chrys one of the trainer at Hybrid.
If your 90-degree knee raise goes a little past 90 because you’ve got longer limbs, that’s completely fine. The goal is to move with control, not hit a perfect geometry chart. Slightly higher isn’t “bad,” it’s just your mechanics.
Feet don’t need to be perfectly glued together. Just keep them close. If they drift a tiny bit, that’s normal and doesn’t hurt anything.
In the bottom position, your legs don’t have to be locked out. A soft, natural extension is fine. The important part is controlling the swing and keeping your core engaged.
The motion itself should feel like one smooth arc. Don’t “pause halfway to bend,” just bring your knees up in a controlled sweep. Think: curl the pelvis, lift the knees, lower with control. One clean motion.
And yeah give a small squeeze at the top. Doesn’t need to be dramatic, just enough to feel your abs actually doing the work instead of your hip flexors taking over. If you don’t feel your abs at all, usually it’s because the pelvis isn’t tucking or you’re rushing the movement