I'm still like that -- sort of. I'm a busy dad of three active kids and have always been athletic and active, but sometimes family obligations prevent consiste

I'm still like that -- sort of. I'm a busy dad of three active kids and have always been athletic and active, but sometimes family obligations prevent consistency for periods of time. When restarting from a low fitness level (whether, in my case, it's cycling or running) I always feel demotivated and pretty crap until I'm about 3-4 weeks into a regular (5+ day/wk) routine and have built my aerobic capacity back up to a point where I actually feel like I'm really running (or biking) again. It's demotivating for the first few weeks, but I've been through this routine enough times to know the light at the end of the tunnel isn't very far away. I think a lot of people who don't have athletic backgrounds and are just starting their fitness journey are mentally hampered by not knowing how the journey progresses, and when they can expect to start feeling and seeing changes. Also, running is non-trivial. People assume it's a natural movement pattern for humans (and it is), but it's definitely not for adults who live largely sedentary lives and are not already fit. It can be downright dangerous if not approached carefully, especially compared to lower impact aerobic activities like cycling & swimming (or elliptical or stairclimber). tldr: people who never push themselves will never likely achieve an exercise high. Also, people starting at 0 have a much harder slog of it than those with a decent base & athletic background.