Cardio and weights, which order.

I always do cardio first. One I feel more energenic if I do cardio first and I also feel like it loosens the muscles up ( warms them up) for the lifting.

Id like to know the anwser to that also. I switch it up sometimes as to keep confuzing the body. I find that after a run, I dont have as much to give on the weights.

Depending on what kind of weight training you do, do you think it is safer to be already tired out when running or already tired out when lifting heavy things with/on top of/over you body?

^^^^^^This.

While it is sometimes harder to do cardio after lifting, cardio isn't as complicated. No matter how tired I am, I can safely put one foot in front of the other. But if I'm exhausted from cardio and then try to squat, bench or OHP, bad things can happen if I'm not fully aware of my form, surroundings and energy reserves.

Doing it on separate days is an option, but sometimes people don't have the time or inclination to get dressed to workout 6 days a week. It's fine to do cardio and lifting the same day, but the way I strongly prefer is lifting first.

Weights before cardio

My trainer has me doing 10 minutes before and 20 minutes after.

I am pro-lifting, with only a bit of cardio, but I think it really depends on how much of each you are doing. Are you talking about doing a hard core cardio exercise (for me, that would be over 30 mins of intervals) or just 10 mins as a warmup? Also, what type of weights are you doing? Are you lifting heavy with free weights or using the machines?

My ideal is a brief, but brisk cardio warmup (say 5 mins to get my heart rate up), followed by my heavy lifting program (NROLFW), followed by 15 minutes of intense interval training. This varies for me depending on which day/workout I am doing, but this is a pretty good average of what I do. My heart rate is up the entire time!

Before I started weight lifting I had always heard the opposite- cardio first and then weights, but I have found that I get in a much better workout (and feel better afterwards) when I do it this way.

It definitely feels like if I do cardio first, I am "running hotter" for the weights, in that my heart rate/breathing are more elevated throughout than they would be if I lifted first. Which seems like it should be a good thing. Subjective, but that's just my 2 cents.

Weights then cardio. With a lower body work out I swim earlier in the day as too tired to do cardio after, but with upper body, I can still fit in cardio. Strength training takes priority for me.

if you are doing enough weights to matter, then you wouldn't be bracketing them with cardio

My preference is strength training first, then cardio on days that I do both. I start out getting my heart rate up with some brisk walking and/or jumping jacks, but not enough minutes to consider it a "cardio session". I do feel more tired when it's time to do the cardio after weights, but I don't care because I really like the stacking that occurs when I lift then do cardio. It seems like my heart rate stays up in a higher range for longer with the cardio after strength judging by my HRM. With the same exact cardio workout, my HR stays in a higher range on average when it follows strength training than when I do the cardio alone. It seems like my body has to work harder nd that's what I want since I'm trying to lose weight without exercising half of my day.

My trainer has me doing 10 minutes before and 20 minutes after.

Yep, agree.

Warm up a little then weights.
I do my "easy cardio" on weights days... Eg cycling and cross trainer. On the other days I run and do no weights at all.

Yeah, I agree with short period of cardio (30 minutes of low impact or 10 minutes of high impact), then strength, then do more cardio if you want. I may be doing the 30 day shred, as opposed to weights, but I have been doing a 30 minute low impact video beforehand. It energizes me for the more intense workout, and I find I get way more out of the hard workout after doing the light workout. If I went any harder or further, though, it would have the opposite effect.

Think of it this way: Do enough cardio to get your blood moving, so you're nice and warm and get the most out of your lifting, and then when you're finished lifting, do any cardio you intend to do for fat loss.

I think doing it on different days is probably more ideal though.