lemon pepper tuna, eggs, bacon, steak, avocado, crackle, pork, the list goes on. Depends on goals aswell. First 3 months of training I was able to build muscle and lose fat. Starting weight was 91kg after 3 months dropped down to 78 kgs with all my lifts going up in the gym. That diet consisted of intermittent fasting, being on a good keto diet which consisted off 1 can of Lemon pepper tuna to break my fast at lunch then have my next meal 5.30 which consisted of just meat, snacked on pork crackle and had my protein shake to keep my protein high