I can imagine people having fun getting lost in the flow of playing a competitive sport. I've also heard some people experience a post-workout high. But does anyone actually feel pleasure in the moment while lifting weights, jogging, cycling, etc?
If so... what does it feel like? Is there anything the rest of us can do to cultivate such a mindset?
Depends. In the past when life was easier, a little more yes. Now that life has become more complicated with responsibilities it's different. I still enjoy a bit of time away from everything but sometimes it's exhausting to manage it all. I wouldn't stop though.