Re: Putting on weight. Weight lifting

In general, there aren't any limitations to the amount of foods that you can consume. Around Week 6, protein absorption and muscle mass usually begins to increase. Fruits and veggies are carbs, and you're probably getting significant amounts of them while on the Plan. Brown rice is carb and protein.
Yes, lift weights or do body-based exercises. A good book to follow is called Convict Conditioning. The author also came out with another book about putting ion more muscle mass, C-Mass, available as a Kindle book.