how often to do cardio

[Btone]

ok been trying to improve my general fitness since Xmas with a bit of weight lifting and a bit of cardio. the weight lifting takes as long as it takes to do the reps, and i do it every other day to give my self a break, and i train different parts ie legs one day, back next arms next and iam happy enough with what iam doing weight wise.

BUT
i was wondering how often i should do cardio workout, at the moment iam doing 30-45 mins a day. and i try to do different machines each day ie rowing, x cross,threadmill ,cycling to break it up a bit
but iam wondering should i be taking a break day like i do with the weights,
should i be spending more time training but on fewer days, or less time training on more days (i take the weekend off)

and one got any advice

 

[Gilly]

but iam wondering should i be taking a break day like i do with the weights

Yes. Although 45 minutes isn't that long really, I don't think you'll be in danger of over-training but I reckon you'd see a big improvement if you switched to 90 mins every other day instead.