You should expect an effort near your maximum heart rate to be the kind of deal where you basically have to lie down and hyperventilate.

Gotcha, yeah, it’s not like that. More of the standing, hands on knees heavy breathing for a few seconds while I catch my breath. I’ll be gasping at the end of a really hard track, likely as the difficulty moves toward anaerobic near the end, but never like I need a lie down. My heart rate drops pretty quickly as soon as a song ends.

Edit - what you’re talking regarding hyperventilate and lie down is what it feels like if I try to push and sustain anything around 188-190. I start getting lightheaded and have to stop. Anything between 175 and 185 bpm is okay for short periods. The highest reading I’ve ever seen on my watch for my heart rate was 192.