De or het jungletraining?

The correct Dutch article is:

de jungletraining

Rule Words ending in -ing: almost always de. See the rule

How to use jungletraining

the jungletrainingde jungletraining
this jungletrainingdeze jungletraining
that jungletrainingdie jungletraining
our jungletrainingonze jungletraining
your jungletrainingjouw jungletraining
every jungletrainingelke jungletraining
which jungletraining?welke jungletraining?
a big jungletraining / the big jungletrainingeen grote jungletraining, de grote jungletraining