This is a test of commonsense. Complete the next sentence:

How to increase bdnf
Try biking.
Biking is a cardiovascular exercise that, if done regularly, will increase your bdnf. Bike three to four times a week for 30 minutes to an hour.
Make sure to incorporate 10 to 20 minutes of fast-paced biking to increase your heart rate further. Bike around your neighborhood or local park.