I hope that surgery went well. If it’s minor and if there are no consequences, you can take up cycling. Cycling is generally regarded as a very demanding activity, and as such burns calories and can help you reduce your weight but only if you’re practicing it properly. That means you must have a balanced diet and lots of liquids, especially water. So, don’t stick to your old way of eating, if it includes lots of simple sugars and fat, but switch to healthy, complex sugar ingredients such as cereal, pasta and whole-wheat bred as carbohydrate reservoirs. Forget about chocolate and various sweet and fizzy sodas. Introduce enough vegetables and fruits, mainly broccoli, lettuce, potato, tomato, oranges, apples and bananas. And divide the portions of food evenly – have three main meals and two healthy snacks a day.