And for someone in between. I can run or bike solo every day and push myself to new personal records (though I never did break the 23 minute barrier on a 5k run). But strength training (primarily bodyweight) and yoga (picked up after a back injury left me crippled for a good chunk of a year), for me, require some other factor for me to stick with it for more than a month or so at a time (which is better than none, but doesn't help me get where I want to be).

Taking a class got me to push myself much further and harder than I ever did solo, and these days I'm making do with online classes because they keep me going in a similar way (though without the same social commitment since it's not actually social).

For me, the biking and running is trivial to start and obligates you to finish. That is, if half way through a ride you want to stop... Well, you still have to get home.

Weights? You just put them down and you are done.

Please re-rack your weights, taeric.

Lifting is worth it for ze pump.

When you do da bicep curl, its da best feeling in da vorld!

Much like you, I found it's most important to find exercise that I enjoy. Cycling, yoga, kayaking, hit that button for me, but others like different things.