Matt Millen first noticed the symptoms of amyloidosis walking up a steep hill.

It's a hill he's traversed a lot, and one he recently conquered for the first time in four years.

Watch it ⬇️, and catch "The B1G Story: Matt Millen" at 8 p.m. ET tonight. pic.twitter.com/xjuyaGngz6

— Big Ten Network (@BigTenNetwork) September 10, 2019