More than 750 HHS employees sent a signed letter to members of Congress and Health Secretary RFK Jr., calling on him to stop spreading misinformation.

Health Secretary Robert F. Kennedy Jr. and Defense Secretary Pete Hegseth competed in a fitness challenge of 50 pullups and 100 pushups under five minutes.

Jesse Watters: "Why do you wear jeans when you work out." RFK Jr: "Well, I just started doing that a long time ago... I would go hiking in the morning and then i'd go straight to the gym." Robert F. Kennedy Jr. explains why he was wearing jeans during the "Pete and Bobby… pic.twitter.com/j5HIIRntGP

Chris Pratt says he gets along well with Robert F. Kennedy Jr., calling the Secretary of Health and Human Services "funny" and "great."

Health and Human Services Secretary Robert F. Kennedy Jr. and Defense Secretary Pete Hegseth faced off in the "Pete & Bobby Challenge," a competition where they challenged each other to 50 pull-ups and 100 push-ups.

Annals of Internal Medicine editor Christine Laine says she won’t retract the study, as demanded by Robert F. Kennedy Jr., and "we’re not changing what we do because of threats."

The 224-pound, fast-food-loving president has supposedly inspired two of his cabinet secretaries to adopt healthier habits.

HHS Secretary RFK Jr. competed against Secretary of Defense Pete Hegseth in a fitness challenge. The Morning Joe panel discusses.

RFK Jr. hasn't completely alienated all his famous in-laws, however. Earlier this week, Chris Pratt came to the defense of the politician, whose cousin Maria Shriver is the mother of Pratt's wife, Katherine Schwarzenegger.