tough on the CNS. but i must do fully body days to keep up strength when training muay thai, which i need all the other days. but if weightlifting is you focus or sport; splits are great. i will even do an intra-day split separated by 4-6 hours just to handle the fully body in 1 day.
There comes a point, strength wise, where killing the legs means it'll take a few days to recover. So doing so, as part of a full body routine, would only be possible 2x a week at best.
tough on the CNS. but i must do fully body days to keep up strength when training muay thai, which i need all the other days. but if weightlifting is you focus or sport; splits are great. i will even do an intra-day split separated by 4-6 hours just to handle the fully body in 1 day.