Is there an optimal workout routine, which would allow me to do cardio and weights, and what supplement products would you recommend? I'm not asking you for a detailed workout plan, but rather for a few pointers and advice on what I should stay away from, especially nutrition wise. People make mistakes when they start doing something, and I'd be very happy if I could avoid some of them by paying notice to your advice.
Thanks.

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Well i would start out by doing both cardio and weights. Cardio is what i recommend for health, lifting does not really increase your "health" just appearance strength and what not. Supplements are give and take. A: They cost money. B. Some are worth the results, others are not. C. Know what you need. D. My moto is that you get whatever you need with a good healthy diet and a multivitamin, unless you intend to be a body builder you do not need anything other that that.
Hope that help, if oyu have any more question let me know or PM me.