Treadmill

The treadmill is an object in The Sims (console), The Sims 2 and The Sims 3 used to improve a Sim's Body or Athletic skill.

The Sims 2
The Fearless Flyin' 4000 Treadmill is an exercise machine introduced in The Sims 2: University. Sims can run on it until they become fatigued. The animation used by a Sim on the treadmill depends on that Sim's Body skill. If the Sim has low Body, the treadmill will stay flat and will move at a walking pace. Even so, the Sim will often fall. If the Sim has a medium level of Body skill, the treadmill will elevate and move faster, but the Sim will still tend to fall. For Sims with high Body skill, the treadmill moves at a brisk running pace. These Sims are less likely to fall, but sometimes do.

When placed on community lots, it differs from other exercise machines in that uncontrolled Sims can and will use it. It is not clear if that is because they do not recognize the weight machines as usable, or because the treadmill outdraws them.

While it is most commonly seen on community lots, the Tinker family of Bluewater Village will have one if both University and Open for Business are installed.

Using the treadmill will raise Sims' temperature if Seasons is installed, and raise Fitness enthusiasm if FreeTime is installed. Sims cannot tinker with the treadmill.

The Sims 3
The Shut-In Treadmill is the default treadmill for The Sims 3. Sims can run on it until they become fatigued. It increases the Athletic skill, specifically the cardio (as opposed to strength) aspect of a Sim's fitness. Sims with high Athletic skill can train other Sims on this object. Sims who exercise on the treadmill often become slimmer. Treadmills are commonly found in the gym and academy lot types, alongside weight machines (and in the latter case, Board Breakers and Sheng Hai Training Dummies).

The Sims 3 High-End Loft Stuff
The Slimline Axursize is a high-tech treadmill introduced in The Sims 3: High-End Loft Stuff. It is virtually the same as the default treadmill, but has a sleek, futuristic design and simulates a moving road when in use.