I dont know enough to get into details, but from my understanding most freediving muscles are fast twitch. Basically tailoring your workout to anaerobic with some crosstraining to keep the aerobic levels up is best. Basically short and fast...but definitely with some aerobic to allow for better recovery.
from rereading that it just seems very generic >.<
This is just from my limited knowledge
but i have confidence that if im way wrong ill have 10 different people just waiting to jump in and tell me that
