(BDNF) BDNF How Exercise Beefs Up The Brain improves the brain How Exercise Beefs up the Brain increase levels of a protein How Exercise Beefs Up the Brain improves the brain How Exercise Beefs Up the Brain How Exercise Beefs Up the Brain How Exercise Beefs Up the Brain increases the synthesis of a protein called BDNF increase levels of a protein Alzheimer’s, Parkinson’s and depression increase levels of a protein increase levels of a protein BDNF BDNF