When tying to lose weight and lean out it is a good idea to manage your carb intake. Your body can't burn fat while insulin is raised - insulin will be raised for around 3 hours after consuming carbs. So after carbs have been consumed, try to leave a window of around six hours before you consume more carbs, thereby allowing your body a window of time to burn fat. For example if you have eaten carbs with your breakfast, make sure your mid-morning meal or snack does not contain any non-vegetable carbs.
This simple snack is ideal.
Tuna with quark