For weight loss, you'll need to get about 5 cardio workouts each week at a medium-high intensity for at least 30 minutes. If you're a beginner, it's best to start slow and work your way up but, if you're in good condition and have no restrictions, challenging yourself with harder workouts is the best way to burn more calories. Interval training is a good choice because studies show you continue to burn calories even after you've stopped exercising. Try adding one of the following interval workouts to your weekly routine or come up with your own:
Interval Training 1
Interval Training 2
Interval Training for Beginners
In addition to your cardio workouts, you'll need to lift weights for all your muscle groups at least 2 non-consecutive days a week. And, by lifting weights, that means using enough weight that you can ONLY complete the desired number of reps. For example, if you're doing 12 bicep curls, you need to use enough weight that you can only do 12 bicep curls and not one more. Most people don't lift enough weight to really challenge their muscles. If that sounds familiar, check out Weight Training 101 and my Workout Center to learn how to lift weights and get some workout ideas.