<human>:  What is the best exercise regimen for a beginner trying to lose weight?
<bot>: A good exercise regimen for a beginner trying to lose weight is to start with a combination of aerobic and strength training exercises. Perform aerobic activities for 30 minutes for at least three days a week and add strength training exercises for 20 minutes, two to three days a week. Ensure that you warm up for five to 10 minutes before starting any exercise session and cool down for five to 10 minutes after you have finished exercising. It is also important to stay well hydrated and to get enough sleep when trying to lose weight.