Does anyone else have an issue with your heart being too well trained? I can be at 172bpm running and it drops to 110 within 10-30secs when I stop. Even after a break of a month it’s still able to handle 6 min miles and slows quick. My resting hr is 45bpm when sitting or chilling out. It just doesn’t seem like I’m getting the same impact from my workouts even with increased load.
If you feel like your not getting a good workout after adding more weight or extending the time, it may be diet related, I learned this the hard way by shorting myself the calories & protein, I was never able to get a good workout that way because my body didn't have the energy nor nutrients to properly heal or make gains that satisfy me even though I never got tired.
Being able to recover your cardiovascular system quicker is a positive & it takes months of no working out before it even begins a super slow journey of going back to normal, sometimes my RBPM floats at 35-40 just chilling on a chair, I always go up in weight (I wear a vest too,150lb is gnarly lol) until it gets to the point I need to work hard for it and it always gives me results.