I don"t wear underwear under my tight running shorts/leggings or my bike shorts. Never had a problem nor VPL.
Be careful wearing underwear in padded bike shorts (those that mention they do this) - that’s a recipe for saddle sores if you ride a lot.
I am a girl, and I wear underpants under my spandex yoga pants. I don’t know or care if I have panty lines showing. I would feel weird with spandex against my crotch. Also, the underwear can be washed in hot water and dried on high, and is clean when I put it on. I don’t think spandex can get as clean as underpants. It just seems a little gross.
Let’s see YOUR picture.
Seriously, WTF? The whole point of going to the gym is trying to make your body look better. You’re going to see people without “fabulous bodies that aren’t treats to be behind.” It’s a GYM. Get over it.
Whoosh!
I don’t wear panties with workout stuff - why bother? It’s one more thing that can chafe or rub.
You didn’t whoosh anyone. You posted something that was offensive and creepy in a thread where it was inappropriate. Own it, apologize, and learn from it.
Exactly. I didn’t assume he really meant he was working out behind her, or anything like that. I’m saying that even though he said he hasn’t actually said that, what he meant was “…in person.”
<shrug> I’m OK with the amount of sweat/dirt that builds up over 2-3 rides while wearing undies, depending on how strenuous the ride is. Obviously some huge ride where I’m covered in sweat and mud requires washing the shorts whereas a shorter, less strenuous ride doesn’t.
Either way, though, I find that riding with undies on make the time I can go between washings a little longer. Even a non-strenuous, short ride usually produces some sweat in the crotch region, and the undies are easier to wash than the shorts. I don’t have issues with chafing or anything else, so it’s not a big deal for me.
But to each their own. I know a lot of riders who don’t wear undies, and that’s fine. My main point I was trying to make is that panty lines are about the 1 millionth thing in my mind when dressing to exercise, it’s simply not something I’d ever worry about whether we’re talking gym wear or bike wear or whatever.
Please don’t listen to this OP. There may be guys who spend their time at the gym critiquing the defects of the women they see but those guys are rare. In my many years in many gyms I’ve heard a lot of comments along the lines of “check out the hot chick on the treadmill.” Only a few times have I heard anything like “look how fat that chick is” and it has always been met by the reply, “Good for her. That’s why she’s here, dumbass.”
As for the underwear - I’m a guy but normal cotton underwear bunches up in bike shorts and causes more problem that it solves. So you need something form fitting under Spandex.
I exercise in form-fitting pants and tops with underwear because that is what is comfortable to me. I don’t worry much about panty lines, bulges, or jiggles.
Hey, I have a dumb question about compression gear - what is it good/used for?
I’ve recently started a strength training program and mostly just wear a combination of Champion from Target and Old Navy exercise gear - sweat-wicking performance tops, semi-fitted capri-length black workout pants, vented cotton footie socks, lightweight athletic shoes. Underneath, sports bra and nylon/spandex semi-no-line underwear.
The only articles I have read about compression gear state that it is useful for distance runners because it helps with recovery. I am not fast enough nor do I run far enough (top distance has been a handful of half marathons and I am SLOW) to worry about it.
I know Crossfitters sometimes wear knee socks as dashing your shins on boxjumps can REALLY suck, but that isn’t compression, although they can look similar.
I don’t know. I don’t wear it for the “compression” benefits. As stated upthread, shorts ride up on me, and the tight knee-length things don’t, so I wear those. I get mine from Old Navy.
Sattua - sorry, I was referring to actual compression garments, not just snug-fitting stuff. I also wear fitted workout gear, mostly because it stays out of my way and doesn’t move around much. 
Thanks! This is the kind of thing I was looking for. I don’t really do cardio that much, or have trouble with stuff riding up.
I’ll wear compression socks (go up to the knees) after a long ride (100 km’s+) to prevent swelling and pooling of blood in the lower legs. Seems to help with DOMS too.
Compression garments do not equal tight spandex shorts/leggings. They’re a special piece of clothing.
Yeah, Old Navy markets theirs as “compression”, but it just seems like spandex to me.
I’m not really a gym bunny, but I was told from day one – when I was but a wee little sprog in peewee ballet – that we do not wear anything under our dancewear. Leotards and dance tights generally have those little cotton gussets in the crotch, like pantyhose, for this reason. (Fashion tights often don’t.)
Now that I’ve grown up and know how much it costs to buy things from Danskin and Capezio directly, I do my rehearsals in cheap sports bras and leggings from T J Maxx. And still don’t wear underwear. It chafes, and the elastic wedges itself into places best not mentioned in polite company.
Some of the burlesque dancers do wear seamless fleshtone thongs under some of their costumes, though. For, er, insurance. The local laws don’t allow you to be actually naked on stage. Although you can paint creative things on your thong and pasties if you like. 
My hope is to look as repellant as possible when I exercise. If a panty line makes someone look away, so much the better. I’m not there for their needs, but for my own.
That guy??