and interal training can be used for promoting any type of adaptation you can use it for uh hypertrophy so here's uh here's one Training Method I learned from my colleague Fabio zonin it was designed by Professor Mason in Italian Mr Universe and Professor okay you take 80% of your W rep max so let's say presumably a trap Max set of five rest for 30 seconds set of five rest for 30 seconds if you cannot do it anymore you're done and then you come back maybe 10 minutes later do it again that's an example of interval training again I see and you can structure interval training to uh for adaptations within the muscle a mitochondria and you can also do that for your heart