[throwaway289943]

Yeah, the biggest limiting factor by far is time, once you get over the issue of motivation/discipline. I bet the optimal thing to do for general health and longevity, is to do light/medium intensity, low impact/risk, exercise of varied sort, for most of your waking hours.

[nradov]

I don't believe that time is really the limiting factor for most middle-class people. It's more a matter of priorities. Most of us spend a lot of time watching TV and scrolling social media.

[grvdrm]

Exactly, I think this is people saying "I'm too busy." But the reality is that they're "busy" by simply prioritizing other things that may or may not be worth it.

Examples I see all the time: excessive phone time (all activities there), stuffing too many things into one day and subsequently completing only a small portion of those things, distractions at work (non-work web sites), etc.

There are good reasons to use your phone, have a big to-do list, and etc. But it's also easier than you think to schedule 45 mins into your day to power through a fitness activity.

I personally think running/jogging is a top activity in terms of value for your time. Burns calories, improves cardio, the list goes on...