Reckless Challenge
The three regular cast members, joined by three guests, attempt to complete sports-related missions in an outdoor studio. The challenges were based on viewers' suggestions.
Tug-of-War Challenge
Nothing is impossible! A super-special project to become a top-notch celebrity! "Infinite Challenge"!! The reckless class president, Yoo Jae-seok! The king of hair, Pyo Young-ho! Jeong Hyeong-don, a life lived with one strength! Only the mouth lived! Dr. Noh Hong-cheol! The special guest is Michael Jackson from Korea! Dancer Lee, Lee Jung!! Part 1 of the Super Member's Infinite Challenge! Engage in a tug-of-war with an 800kg bull, the emperor of bullfighting who conquered the whole country! Surprised by the bull's strength, the Infinite Challenge team... Group tire dragging, angry Jeong Hyeong-don struggles.. Severe training continues.. An unpredictable super-special challenge, bull vs human power confrontation!! This Saturday, the laughter bombing begins!!
100-Meter Sprint
Motorboat vs. Paddle Boat
Public Bath Challenge
Dog-Paddle Swimming Challenge
Clothes-Washing Challenge
Collecting Coin Challenge
Stand-Up Challenge
Car-Washing Challenge
Pump Challenge
Digging Challenge
Special Coverage from Guam - Part 1
Special Coverage from Guam - Part 2
Make-a-Noise Challenge
Mosquito-Catching Challenge
Summer Special: The Ghost-house Challenge
Briquette Removal Challenge
Special Coverage: Top 5 Highlights of 'Reckless Challenge'
Car-Push Challenge
Drag the Sled Challenge
Count 60 Seconds at High Altitude
Esper Ito vs. Infinite Challenge Members
Maria Sharapova vs. Infinite Challenge Members, Part 1
Maria Sharapova vs. Infinite Challenge Members, Part 2
Arm Wrestling Challenge
Applying Lipstick on Carnival Rides
Reckless Challenge Best Moments + Unaired Race with Ostrich Challenge Scene