after 15 days of losing and gaining and losing the same 2 to 3 lbs, I did what I called a mini-steak day. I had coffee in the morning (no half and half because it's P2), skipped lunch and had an 8 oz (raw weight) lean sirloin steak with all visible fat removed, broiled so there's no added fats/oils and with no salt used to season it. Along with it I had 175 g of roma tomatoes chopped up in 2 tbsp apple cider vinegar. The calorie total for the day was 350 calories. It dropped me down 2.6 lbs which was the most I'd lost in one day since the first week of that round. Also in the later part of this long round I found my body seemed to react better with more protein. I was not eating fruit most days. I would increase my protein to 150 g or 200 g but always stay under 500 calories total for the day.
there are no rules for these, because they are off protocol- just things people have experimented with. i think the norm, if there is one, is to not eat all day and then eat your 3.5 oz of steak with an apple or tomato. for an all protein day you'd only eat meat- the amount is up to you.
No....there's nothing set in stone. Some people do it as a skip lunch and have a regular P2 dinner with 3.5 oz of steak and tomato or apple - which is what Margie mentioned. Because the steak is so lean and I'm a typeO blood time that reacts well to beef and knew I had good losses on true P3 steak days, I decided to try my own thing to try to break my yo-yo'g. What worked for me may not necessarily work for someone else.
there is no right answer here- that's what i'm saying. it's all off protocol, so people have experimented with different things. i've done it a few times and had a hamburger that was about 5 oz, and have lost well. the mini steak days are much more effective for me than an apple day.