New Delhi, Dec 08 (ANI): Nutrition experts have revealed how one can stick to their diet and still remain in shape. During the holidays, it can get extremely busy and stressful and we tend to overindulge so it is important to keep active.If people know they have evening engagements, then can try exercising or walking in the morning. Exercise can help expend extra calories that they may be taking in but more importantly it helps to reduce stress and increases energy. A 30-minute walk or easy bike ride is indeed a great way to keep active and reduce stress or one should aim for either high-intensity interval training or resistance training. This might include running fast for one minute, followed by two minutes of walking that they repeat 10-15 times or lifting weights to get stronger. These exercises have been shown to improve metabolism, fat loss and muscle gain.