You should be a Navy SEAL! They have the ability to recover Rest/Digest even when in Fight/fight mode. The sympathetic nervous system and parasympathetic nervous system operates at +3 to 4 on the X and Y graph for these guys, probably Lance too.
A person near death or with cancer might be at a -2 to -4 X and Y, they can't recover and eventually will expire.
Your scores will diminish as you age. You can have this check with a SCIO/QCXI/EPFX Electro Physicolgical Feedback System machine. Maybe you are special and you just discovered it.
Or maybe you just have not gone hard enough to blow yourself up. Try lactic training or intervals to 95% HR, 2 min on, 1 recover, for about 45 minutes. At 24 hours I'm starting to feel sluggish, at 48 hours I hurt like hell, at 72 hours I'm on my way to recovery. My max HR is 192 or so at age 57, during the hard efforts I'll hit at least 177 to 183. The better in shape and stronger I get the harder I have to push to get my HR up there. There are many formulas, 1 to 1, 3 to 1, 2 to 1, ....
| current weight: 192.0