dr. jeffrey lieberman, thank you so much. >> thank you, dr.upta. >>> still ahead on "sg md," you've probably senn the ads for, quote-unquote, low-t, they are kind of if unny ads. but what could low-t or testosterone be doing to your heart? it found out the doctor we needed was at st. anne's. wiggle your toes. [ driver ] and it got his okay on treatment from miles away. it even pulled strings with the stoplights. my ambulance talks with smoke alarms and pilots and stadiums. but, of course, it's a good listener too. [ female announcer ] today cisco is connecting the internet of everything. so everything works like never before. >>> it's often said that necessity is the mother of invention. well, that couldn't be more true for don and mora horton, they used magnets to turn a diagnosis into a business opportunity. >> red, 18, go! right man. that's it right there. good job right there. good job right there. >> for more than three decades now don horton's life has been mostly football. >> division i, division i, division iii and also a high school c