Hypoxic Advice/Workouts--Not Your opinion of Hypox Efficacy

My coach gives us lots of hypoxic sets. One of the more unusual was a warm-up set a few weeks ago. It was a "prime number" set (he loves making us solve math problems while we swim, too). The set was 22, 50-yard swims. On the prime-numbered 50s, the first one was 8 breaths per length. The second one was 7 breaths per length, and so on. The non-prime-numbered 50s were choice, I believe. So it looked something like this: 1) 50 free, 8 breaths/length 2) 50 choice 3) 50 Free, 7 breaths/length 4) 50 choice 5) 50 free, 6 breaths/length 6) 50 choice 7) 50 free, 5 breaths/length 8) 50 choice 9) 50 choice 10) 50 choice 11) 50 free, 4 breaths/length 12) 50 choice 13) 50 free, 3 breaths/length 14) 50 choice 15) 50 choice 16) 50 choice 17) 50 free, 2 breaths/length 18) 50 choice 19) 50 free, 1 breath/length 20) 50 choice 21) 50 choice 22) 50 choice We've also done things like this: 1) Underwater dolphin kick, N x 25 (where N is an algebraic variable). The first 25 is 6 underwater dolphin kicks, then swim easy the rest of the 25. The next 25 is 7 underwater dolphin kicks, then swim easy the rest of the way. Continue to add one dolphin kick per length until you either can't go any farther or you get to the wall. 2) Underwater breaststroke pullouts, N x 25. Similar to above. The first 25, do one underwater breaststroke pullout, then swim the rest of the length (the swim can be freestyle). The next 25, do 2 underwater breaststroke pullouts, then swim the rest of the length. Continue by adding one breaststroke pullout each time, until you either can't do any more or you hit the wall. We swim long course every Saturday. I think the last time we did the above set, it was 50s instead of 25s. 3) Swim a series of 200s as follows: 1st 50 - breathe every 3 strokes 2nd 50 - breathe every 5 strokes 3rd 50 - breathe every 7 strokes 4th 50 - breathe every 9 strokes

My coach gives us lots of hypoxic sets. One of the more unusual was a warm-up set a few weeks ago. It was a "prime number" set (he loves making us solve math problems while we swim, too). The set was 22, 50-yard swims. On the prime-numbered 50s, the first one was 8 breaths per length. The second one was 7 breaths per length, and so on. The non-prime-numbered 50s were choice, I believe. So it looked something like this: 1) 50 free, 8 breaths/length 2) 50 choice 3) 50 Free, 7 breaths/length 4) 50 choice 5) 50 free, 6 breaths/length 6) 50 choice 7) 50 free, 5 breaths/length 8) 50 choice 9) 50 choice 10) 50 choice 11) 50 free, 4 breaths/length 12) 50 choice 13) 50 free, 3 breaths/length 14) 50 choice 15) 50 choice 16) 50 choice 17) 50 free, 2 breaths/length 18) 50 choice 19) 50 free, 1 breath/length 20) 50 choice 21) 50 choice 22) 50 choice We've also done things like this: 1) Underwater dolphin kick, N x 25 (where N is an algebraic variable). The first 25 is 6 underwater dolphin kicks, then swim easy the rest of the 25. The next 25 is 7 underwater dolphin kicks, then swim easy the rest of the way. Continue to add one dolphin kick per length until you either can't go any farther or you get to the wall. 2) Underwater breaststroke pullouts, N x 25. Similar to above. The first 25, do one underwater breaststroke pullout, then swim the rest of the length (the swim can be freestyle). The next 25, do 2 underwater breaststroke pullouts, then swim the rest of the length. Continue by adding one breaststroke pullout each time, until you either can't do any more or you hit the wall. We swim long course every Saturday. I think the last time we did the above set, it was 50s instead of 25s. 3) Swim a series of 200s as follows: 1st 50 - breathe every 3 strokes 2nd 50 - breathe every 5 strokes 3rd 50 - breathe every 7 strokes 4th 50 - breathe every 9 strokes