My new no excuses, got no time but I gotta work out workout:
Run up and down the stairs. Until you can't anymore.
If you have 10 more minutes, add this yoga routine, repeat three times, at least:
1. Sun salutation
2. Standing forward bend
5. Upward facing dog
5. Downward-facing dog
6. Standing forward bend
7. Sun salutation
Then, go for a ten minute walk with a real dog.
My blood glucose comes down 70 points, every time.