Gym question for the more experienced

Depends on the soreness. It's normal or expected that a new exercise routine will cause your muscles to complain. But sharp pains rather than a ache might mean you've damaged something.

Alternating upper and lower body workouts is a very good idea. But throw in an extra rest day if you need it.

Listen to your body, it's usually telling yourself something! Six days may be too much for you right now (not sure how long you've been going). Like the last poster said, maybe dial it back a bit until your body gets stronger and recovers faster.

As the above user said, you may have to cut down to 5 days. I was doing 2 hours of cardio this summer, followed by an hour of lifting 6x a week. I burned out quick and took a week off (except for walking), and ended up working my way back up to 6x a week. Sore is good, injured not okay.

I use this stretching video the day after leg day. http://www.youtube.com/watch?v=1fztE4mK7C0

Also, if you have FocusT25 program at home the stretch dvd is very, very good (even better than the youtube video). I felt the soreness relieved almost instantly after completing the video.

It is normal for your muscles to be sore after legs. Especially on the 2nd day. This is called delayed muscle response. It is actually better to continue with your workouts so you can get the soreness out. It would help to stretch after any weight training to eliminate soreness as well.

With a good workout, you'll be sore the next day. But if you're sore 2 days later, unless it's very mild, then I'd say you (or rather your trainer) are rushing things. It's ok to do cardio every day, even if you're sore. But if you do an upper body weight workout one day, you should give yourself a day off, then do it again the next day if you're just slightly sore. That's why a lot of people alternate days...one day upper body, the next lower, then repeat. And yes, it does get easier, but should never be EASY. You should always be trying to do a little more every time you do it...a little faster, little farther, a little more weight, few more reps, etc. Be sure to tell your trainer how sore you were & if he doesn't back off, then request that you progress a little slower, or request a new trainer. Some trainers are into the exercise to the point of complete physical exhaustion every workout, every muscle, but that can lead to injury. Also make sure to give yourself one day off a week from exercise of any kind; studies have shown that it actually is better for your fitness.

Is this your first go at the gym?

Have you been working out at all before this?

If you haven't I would highly recommend dialing it back to 3 days a week- with maybe some walking or whatever fun thing you want to do between.

6 days a week is typically unnecessary and you are more likely to get so sore you cant' move that you won't go back.

This isn't my first go at the gym but it is my first time back in about 4-5 months and I hit the ground running. I've been 7 out 8 days now.

I can tell you that even when I take ONE week off from lifting legs it's hell the next time I do. Soreness is okay to work through. Pain isn't. Example being- I strained my left glute last week- that is NOT something you want work through. Feels like I'm getting stabbed in the butt cheek every time I do something other than slow walking. So I'm taking a break from lifting legs and running. I'm keeping it to light elliptical work and lifting upper body and calves until it feels better.
Also, it's important to remember to stretch after lifting. I can definitely tell when I don't, I get sore. If I'm running short on time, I'd rather skip my last set of whatever I'm doing and get a good stretch in.

It's more than likely just soreness... just keep swimming