There is plenty of conflicting information and advice out there. For example, one website will say: the injured brain needs total rest. Another will say, the injured brain will require mild stimulation so it can use brain plasticity to rewire itself. Others with say, once the brain is injured, it can never heal, you have a certain amount of brain cells and that is it. Another will say, exercise can help something called neurogenesis, this means that your brain heals cells and even regenerates new ones.

It's all very confusing.