All workouts are created equal. Should you be focusing on high intensity interval training (HIIT), training for a marathon or getting on the bodyweight bandwagon to torch the most calories and fat? “The best exercise is one that you enjoy, and one that you will actually do,” said Lieutenant Commander Katrina Piercy of the U. S. Public Health Service Commissioned Corps, and the federal lead for the 2018 Physical Activity Guidelines for Americans. Dr. John Jakicic, who chairs the American College of Sports Medicine Obesity interest group, agreed. “There is no perfect exercise,” he said. “They all count, and they all contribute in different ways. You might get something with HIIT that you might not get with yoga, and you get some benefits from yoga that you might not get with HIIT. It’s about moving, and it’s about burning calories.” So find what you can stick with in your life for weeks, months and years -- not just the first week of January. But don’t become one of the 67% of gym membership holders who never go; at around $60 a month on average, that’s wasting $720 a year.
Listen to your mum - dieting is faddish. Instead, improve the "quite" to "all" healthy and eat only nutritionally balanced, healthy foods. Cut out all sweets and junk foods, apart from an occasional treat, as humans would have always done till recent times. The exercise is important, and include plenty of stealth exercise, such as taking the stairs instead of the elevator and cycling to the shops instead of driving, etc.
Too little sleep or too much sleep can throw your stress and regulatory hormones out of whack, and may lead to weight gain. A single night of sleep deprivation can increase levels of ghrelin (a hormone that promotes hunger), making you more likely to overeat the next day. Reduced sleep may also lead to fatigue during the day (duh) and less physical activity, which may be another reason why people who regularly don't get enough sleep tend to gain weight.
Here's something else most people probably don't know: Fidgeting is good for you. It's considered a nonexercise physical activity, and it's an important way to burn energy. You get more health benefits if, in addition to exercising, you are a more fidgety, more active person the rest of the day. This means gesturing while you're talking, tapping your foot, just moving around.