The positive effects exercise has on conditions such as anxiety and depression have been studied since the 1980s. The euphoria that follows acute exercise, known as 'runner's high', was discovered by Kenneth Cooper of the Cooper Institute, who cited the case of a man 'who was so despondent, he wanted to die. Because his heart was weak, he thought the best way to commit suicide without embarrassing his family was to run around the block as fast as he could until he killed himself.
The B-Active Team's blog
The best advice I could possibly give is this: Do your own research using credible sources. This is the information age, never before has so much knowledge, information, facts, reviews and true stories been available to the masses. Look at your source of information closely: Do they stand to gain financially from the information they are giving you? If so, I would continue my research. Don’t take one source’s word for it – get as much as much information as possible and then make an educated decision on what is right for you.