Adam "Mad Dog" MacDougall (born 8 May 1975) is an Australian author, businessman and former professional rugby league footballer who played in the 1990s and 2000s.

A New South Wales State of Origin and Australian international representative centre and wing, he could also play fullback and spent the majority of his career at the Newcastle Knights, with whom he won the 1997 and 2001 Premierships.

In MacDougall's first season with Newcastle he scored five tries in eleven games that culminated in the club's victory in the 1997 ARL Grand Final where he famously, but accidentally stood on the head of Manly-Warringah captain Geoff Toovey after being tackled by the Manly halfback.

It was revealed during his appeal that MacDougall had suffered a severe head injury in 1993 that damaged his pituitary gland and it was essential that he take prescribed medication, called Sustanon 250, which included a banned steroid.

In round 20 2001, MacDougall equalled Darren Albert's club record of four tries in a match during Newcastle's 37–30 victory over the New Zealand Warriors at Ericsson Stadium.

The Man Challenge is built on the premise of exercising for just 10 minutes a day and giving men a simple to follow meal plan that still allows them to enjoy a beer and a burger.

Also involved is AFL Premiership winning Coach Paul Roos who acts as a motivator for users of the program, while another feature includes taking on celebrity athletes such as Sonny Bill Williams to exercise challenges.