Clean Eating And IIFYM/CICO Are Actually The Same Thing
Clean Eating is a type of diet where you can eat as much as you want as long as the foods are “clean.” If It Fits Your Macros (IIFYM) is a diet where the specific foods don’t matter as long as you’re meeting certain calorie and macronutrient numbers. Both of these approaches are incomplete or unsustainable over the long term. Clean eating needs to be more flexible in the types of food that people eat either because for ease or enjoyment, and IIFYM has to include a wide variety of foods to ensure proper fiber and micronutrients.
The most important factor in exercise for weight loss is simply showing up
There’s a lot of argument about what the right kind of exercise is, if you want to lose weight. The answer is, it probably doesn’t matter - so long as you’re actually exercising consistently. Different activities can certainly have different secondary effects aside from burning calories, and this should be considered in the context of what goals you have for your training aside from weight loss.