June 30, 2015 2:55 PM EDT

Comedian Stephen Colbert, future host of the The Late Show With Stephen Colbert, accepted former Daily Show co-star and HBO host John Oliver’s challenge to do 20 pushups in support of American veterans. Note, and chuckle at, the piece of paper pinned to a bulletin board that says “THINGS TO SUPPORT: -Troops -Veterans -Lumbar”.

The late-night host is the latest celebrity to participate in the #GiveThem20 campaign, which challenges Americans to do pushups or sit-ups to support veterans. Other stars that have promoted the cause include Jimmy Kimmel, Jon Stewart, Rob Riggle, Carson Daly, Will Arnett and the Rockettes.

Write to Olivia B. Waxman at olivia.waxman@time.com.

Read More From TIME

Related Stories