According to TMZ Sports, Mayweather said he "absolutely" will abstain from having sex before the much-anticipated boxing match.
Mayweather and McGregor will square off Aug. 26 in Las Vegas.
The comment came in a video exchange with a reporter, which TMZ Sports posted on its website:
TMZ Sports also noted Mayweather's opponent may not be following the same protocol.
McGregor will need as much energy as he can muster against Mayweather considering "Money" is a perfect 49-0 in his illustrious boxing career and is known for his lightning quickness and ability to avoid direct blows from his opponents with his quick footwork.