What watching sports does to your mind and body, according to scientists​What watching sports does to your mind and body, according to scientists 

 Scientists find watching sports raises fans’ heart rates, spikes cortisol, and may even affect cardiovascular health – but researchers say the social benefits can outweigh the risks. From World Cup fever to the Knicks’ title run to a new NFL season, NBC News’ Dr. Akshay Syal looks at what cheering on your favorite team does to your body.  ​​Scientists find watching sports raises fans’ heart rates, spikes cortisol, and may even affect cardiovascular health – but researchers say the social benefits can outweigh the risks. From World Cup fever to the Knicks’ title run to a new NFL season, NBC News’ Dr. Akshay Syal looks at what cheering on your favorite team does to your body.