[criddell]

The hard part for me is stepping away when I'm grinding on some problem. It always feels like I'm sooo close and this next idea could be the one that lets me walk away victorious.

Usually I'm wrong though and taking a break would be a much better use of my time. Walking, biking, noodling on my guitar, or even going for a drive all seem to work for me.

[calmbonsai]

Same. When you're grooving/flowing it's different than when you're "just on the cusp".

My only reliable "hack" is to have a workout/exercise partner and/or trainer so it becomes a mutual shared commitment.