Stairs, after a three week hiatus.
30 trips up and down the two flights.

After just two trips I was getting winded, and by three trips, I was feeling it and breathing pretty hard the rest of the time. So lung capacity doesn't hang too well. However it took 11 trips to get the heart rate up above 150. Apparently heart conditioning doesn't degrade as quickly as lung capacity when you aren't exercising.

Anyway, like I said, 30 trips up and down, two steps at a time.

Time 18:25
Average heart rate 152 BPM. Got a mild headache afterwards.

Contrast that with August 29, the last time I did 30 trips.

Time then: 17:15
Avg heart rate then: 164

Anyway, glad to get back to it. Hopefully I manage to get the old diet in check again soon.