Matt Damon – Exercise

Now, this guy is a unique celebrity on this list. Matt Damon is a bonafide action star who needed to gain weight instead of losing pounds for a role he was working on. The 2009 crime-comedy movie The Informant required him to add an extra layer of body weight to his frame. Matt gained an additional thirty pounds during the movie. He ate more meals per day to reach his goal, and he was always seen eating a to-go meal from a fast-food chain.

Credits to his hard work, he was nominated for a Golden Globe Awards for Best Performance by an Actor in a Motion Picture. He was able to get his normal form back after the movie by following a strict exercise routine. However, this kind of stunt for Hollywood actors is becoming more of a health concern as years pass. In fact, Damon joined in with other actors to warn about the dire effect of sudden weight changes.