I get horrible motion sickness on certain amusement park rides. I don't have any problems with the trampoline. If you can jump up and down on the floor and not get sick, you should be fine. The only time I get a little weird feeling is if I look down. Then I see where my feet are going and I lose my balance and usually take a dive off the thing.

It does feel awfully strange when you get off and step on the floor and it doesn't give underneath you. LOL

Whatever you do, DON'T "invest" in one of those $20 or $30 ones you see in the stores. They're junk, don't have proper springs, and can actually hurt you.

There are several brands out there. Needak is the one with the most "toss" next to acrobatic trampolines, meaning you get more height, and they have a softer landing. Urban Rebounders are stiffer and don't give you as much loft, and it's the feeling of getting tossed into the air is what's the most fun.

You can get a stabilizer bar to hang on to, too. So if you'd be worried about feeling like you were going to fall off you have something to give you some security until you're used to it. The lady I bought my rebounder from would actually let you use them and return them for free, but she went out of business. I didn't need one though.