Mark Wahlberg starts 4 a.m. workout with ice bath first

Mark Wahlberg opens his latest training grind in the cold. In his 4AM Club Challenge, the actor starts with a three-minute ice bath before moving into a 14-exercise workout, turning the plunge into the first move of the day rather than a reward after the work is done.

The format is built for spectacle as much as discipline. Wahlberg’s YouTube series invites creators into his gym to see whether they can keep up or tap out, and the first episode with Brent Rivera premiered on March 27, 2026. The setup leans hard into the image Wahlberg has spent years building: a man who wakes at 4 a.m. to train, and who wants to get as much done as possible before work or before his kids are up.

What makes the cold bath the story’s central detail is the way Wahlberg uses it. He says the plunge helps him feel ready to train, wipes away the soreness and aches he wakes up with, and leaves him energized with a dopamine boost that lasts for hours. That is the part regular people can actually test for themselves. A short, controlled cold exposure before lifting may provide a reset, a focus cue, and a way to get moving when the body still feels stiff.

The rest is less transferable. Wahlberg’s routine pairs the plunge with a heavy leg day, assault-bike work, squats, Bulgarian split squats, hamstring curls, and core work, all inside a celebrity-branded challenge built to test invited creators. TMZ reported that Wahlberg sometimes goes to bed around 6:30 p.m. so he can wake at 2:30 a.m. and still get eight hours of sleep. That detail matters because the ice bath is only one piece of a much larger sleep, training, and schedule machine that most people cannot copy whole.

The sequence also matters to the cold-plunge crowd. Cold first, weights second, is a different message from the usual athlete recovery script, where immersion comes after training. It frames the plunge as a performance primer, not just a recovery add-on, and that is exactly why it spreads so easily online. The science remains mixed. Mayo Clinic Press notes that enthusiasts claim faster recovery, less pain, fewer colds, and a better mood. Harvard Health says the evidence for broad benefits is thin and warns people with cardiovascular disease, especially heart rhythm problems, to avoid it. Cleveland Clinic says cold plunges may help sore muscles, decrease inflammation, and heighten focus, but recommends keeping exposure short and not going too cold.