A comfort swimmer's guide to easy swimming

But it's what coach sent so I pushed through it. I'm sure he has a good reason.

SCY, Solo

Warmup
400 free swim (swam as 75free/25 back)
300 pull breathe on 5 (was able to hold 5 for 100 then started breathing on a 2-5-2 for the rest)
200 IM drill
100 kick no board

Main Set
20 x 100 free on 1:30: make the interval by 3-5 sec. and pace it out.
(I did either 19 or 21, not sure which. I kept on the 1:30 interval, averaged around 1:26 with some around 1:28 and some at 1:24. This set is hard to do alone. Real easy to space out and lose focus.

Cool down
100 easy
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3100