In triathlon we do them a lot but the window between sessions needs to be 6+ hours and they both can't be for the same reason. They need to aid one another.
So triathlon would be morning intervals on the bike/run that is the hard A session for the day to build up the threshold engine. That is the one that requires the protein synthesis
So your B session has to respect that to facilite gains. So my B session is then just a recovery swim nothing that pushes my HR or pace into zone 3. It's to move blood around while still helping maintain cardio fitness.
So I would assume lifters doing upper and body in same day but that is to much demand on the body and if you did a hard set in the AM then you are already in your recovery window and now confusing it with a hard set later in the day again.
You can do this if it's your fucking job and you have a team of bros...but average people...it's just to much.
My understanding is it's two a days.
In triathlon we do them a lot but the window between sessions needs to be 6+ hours and they both can't be for the same reason. They need to aid one another.
So triathlon would be morning intervals on the bike/run that is the hard A session for the day to build up the threshold engine. That is the one that requires the protein synthesis
So your B session has to respect that to facilite gains. So my B session is then just a recovery swim nothing that pushes my HR or pace into zone 3. It's to move blood around while still helping maintain cardio fitness.
So I would assume lifters doing upper and body in same day but that is to much demand on the body and if you did a hard set in the AM then you are already in your recovery window and now confusing it with a hard set later in the day again.
You can do this if it's your fucking job and you have a team of bros...but average people...it's just to much.