Last week I was given a task by coach to do this:

6 x 50m -> slowly targeting to stretch and pull
10 x 100m -> not too fast until cannot last the distance and not too slow till I’m out of form. 20sec rest in between.

Amazingly such a simple instruction do makes a difference. Logically you would have agree that go slow last longer, go fast pant like mad. Silly me always wondering what went wrong, why am I panting like a dog after every lap when I’m on my own at the pool, gotta switch to BS to calm myself down…… It is indeed…..my stupidity…. Brainless creature....