Improving freediving skills
Improve your freediving training skills
ABYSS Garden sheet
You will find, like the last one, on this document some skills for learning about cross training and how integrate cross training to your freediving training. Weekly impssible to practice every day freediving, the cross training is a good way to improve skills for freediving without freediving training.
And if you don't want to imprve your skills by yourself, you can take a look on the freediving coaching from ABYSS Garden.