That's another reason I have 3 different sessions:
2 att + 2 def + 1 phys
2 att + 1 def + 2 phys
1 att + 2 def + 2 phys
Although I didn't look at intensity, so I might still be overtraining certain aspects. I'm all for balance.
One of my perfect sessions is easy - easy - easy - hard - very easy. Build up, balance intensity and don't make your sessions too hard. Your players won't like it.
True. But if I throw GK training in as well, it would be wasting condition of my field players (or wouldn't it? Will they still gain progress towards their next skill? That's one question I really like to have an answer to.). I have considered training them in normal drills with the rest of the team for half of their condition, then train them seperately in GK training for the other half. But that feels like a lot of work.