[taneq]

Have you tried interval training? I've had the best return on effort with that out of everything I've tried (jogging, traditional gym work, cycling). It's light on broscience and seems to be supported by all the 'real' scientific testing. It only takes 10-15 minutes per day and it's completely self-guided (I use a timer app on my phone to keep track of intervals.)

[stinkytaco]

Like HIIT? A bit. I did the NYTimes 7 minute workout for a bit to try and break out of a rut. It was pretty good, but I fell off that wagon too, partially lack of variety, I think. It reminded me a bit of basic training. I think there's got to be a market for guided training like that. They were often used for punishment, but I liked grass drills.