Including a small amount of higher sugar and/or higher fat food here and there (I usually try to refrain from using the term “cheat meals” as it wrongly implies that you’re doing something outside the rules) is not going to negatively affect your muscle building or fat burning progress, and it will make your overall eating plan much more enjoyable while still delivering the same results.
The sport of competitive bodybuilding is a game of adapting our training and diet to manipulate our physical appearance. As our bodies approach age 40 and beyond, there is inevitable muscle loss that will occur. Coupled together with the possibility of decreased testosterone production and ailing joints, there are a few things to consider when competing into your 30s and beyond.
After session 12, consider whether you need to increase the weight for any particular exercise. If you can comfortably do more than the RM of 12 exercises, increase the weight by a modest amount, say two pounds or a kilogram for isolation exercise muscles such as triceps and biceps, and 5 pounds or 2.5.kilograms for compound and large muscle group exercises like squats and deadlifts. When using dumbbells, this would apply to each one. Don’t increase the number of sets beyond 3 at this time.