Comfort is a motive in The Sims, The Sims 2 and The Sims Stories. It indicates their physical comfort and can be satisfied by having the Sim sit or lie down. There is no comfort in The Sims 3 and The Sims Medieval. Instead, working out and furniture affect Sims through moodlets.
Comfort has its own section in the buy mode catalog. It contains dining chairs, living chairs, sofas, and beds--basically, items that affect a Sim's comfort motive.
If a Sim has been standing up for too long, his or her Comfort meter will drop. Though it is not as important as the hunger meter, Sims who become uncomfortable will become grumpy and irritable. Sitting down and relaxing is a quick and easy way of replenishing the Comfort meter, as is going to bed. Taking baths and hot tubbing will also improve comfort. Even if a Sim is reading, watching television, or playing the piano, their comfort level will rise as long as they are sitting down. Of course, different chairs, beds and baths will increase the Comfort level at different rates; for example, the Werkbunnst All Purpose Chair[TS] isn’t about to raise comfort levels any time soon.
In places such as Downtown and Old Town, there are benches for Sims to sit down and relax, but they aren't exactly comfortable. There will often be more comfortable chairs or sofas for them to sit on, but even then, getting Sims in The Sims to sit for any length of time is easier said than done. This is somewhat improved in The Sims 2, as Sims are more likely to sit autonomously when Comfort is down, and to remain sitting long enough to get some back.
Bathtubs in The Sims 2 allow Sims to take bubble baths, which increase comfort more than regular baths. Sims can also take bubble baths in The Sims 3, but must first buy bubble bath. Massages in The Sims: Superstar and The Sims 2: Bon Voyage are another way Sims get comfortable.
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