I have training every morning, before job, Monday to Friday. Sometimes, I have additional training in the afternoon, but also in Saturday afternoon. During week-end, In the morning, I have cardio exercises. I never felt “overtrained”.
My best fried has training every day, Monday to Saturday 2 times per day. She has perfect body, like figure model, but also she has beautiful face. She has two children (twins) but her body is super.
I agree that “overtraining” is an excuse for lazy people…