High Intensity Interval Training (H.I.T.T.) may have the same benefits as running and is a more efficient use of time: http://well.blogs.nytimes.com/2013/05/09/the-scientific-7-minute-workout/
Read the linked journal article.
Don't do HITT with low available glucose (blood and liver); your body will eat through what's present quickly, won't have enough time to prepare more, and will break down skeletal muscles for energy instead. I doubt this should prove problematic, but omitting this caveat is simply irresponsible.
Thanks! The 7-minute workout sounds reasonable and I might consider adding elements of it into my 4-minute abs workout I have already. It wouldn't replace running altogether since 1) I enjoy running, so it is not time lost and 2) I'm training for 5k cross country races.
This is the public group instrumental rationality diary for June 1-30; it's going up pretty late (sorry!) but entries for earlier in June are welcome.
Thanks to cata for starting the Group Rationality Diary posts, and to commenters for participating!
Next diary -- July 1-15
Immediate past diary -- May 16-31
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