Originally Posted by terry
Not 15 sec rest. I aimed for a 1:1 work:rest ratio. The driving factor in interval choice is whether it allows me to swim at the pace I'm aiming for 1:1 is still in the aerobic range, yet allows enough recovery to maintain an average of 21 sec. I'll experiment with slightly shorter rest after my repeats improve to sub-20 sec.
Now I understand (after a full 8 hours sleep). Apparently I could neither type nor do math yesterday. Yet can you believe I was at work taking care of patients?