BOSTON (AP) — The man who inspired people around the world to dump buckets of ice water over their heads to raise millions of dollars for Lou Gehrig’s disease research is back in the hospital and is keeping his sense of humor.

A Facebook post from the family of 32-year-old Pete Frates said he is resting comfortably at Massachusetts General Hospital and that “doctors, medicine, prayers and love continue to help him get stronger.”

READ MORE: Philadelphia Weather: Week Starts With Muggy Conditions Before Cold Front Arrives

Maria Menounos Recovering From Brain Tumor Surgery 

After some news outlets erroneously reported Monday that he had died, Frates responded by posting a 45-second video on Twitter showing him lying in a hospital bed while the song “Alive” by Pearl Jam plays in the background.

Frates’ family said Sunday that he had returned to the hospital and was “battling this beast ALS like a Superhero.”

He was diagnosed with amyotrophic lateral sclerosis in 2012. The disease weakens muscles and impairs physical functioning. There is no known cure.

READ MORE: Coroner: 10 Victims Killed In Northeastern Pennsylvania House Fire Died Of Smoke Inhalation

The ALS Ice Bucket Challenge raised more than $220 million when it took off worldwide on social media in 2014.

Police: Clerk Robbed At Knifepoint In Kensington

Frates is a native of Beverly, Massachusetts, and played baseball at Boston College. He played professionally in Germany after graduation and in amateur leagues upon his return to the U.S.

He received his diagnosis after getting hit on the wrist by a pitch and noticing it wasn’t healing properly.

(© Copyright 2017 The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten or redistributed.)

MORE NEWS: WATCH LIVE: DA Krasner, Gun Violence Task Force To Announce Convictions Of 2 Defendants For Multiple Shootings