Protein and bodybuilding

Athletes, especially bodybuilders, put a huge emphasis on protein content and equate this to eating large amounts of meat, eggs and dairy. It is a bit of a misconception that athletes need very large amounts of protein to build muscle; granted the recommended dietary amounts are very low for someone trying to grow, however it is not uncommon for some bodybuilders to consume more than 4g/kg of protein per day.
Often the huge amounts of protein come at the expense of the other macronutrients and this can lead to deficiencies in nutrients. Also an excessive protein intake can lead to changes in the body's pH levels, becoming more acidic, which generally is nothing to really worry about but over time can lead to the leaching of minerals, such as calcium, from tissues into the blood supply to restore pH levels.
It is important to try and look at achieving a balance of macronutrients and utilize each one at specific times to maximise muscle gain and keep bodyfat levels to a minimum.
Protein is most importantly needed in times of muscle breakdown, so first thing in the morning, after training and before bed are the optimal times to take in larger amounts of protein, as the body will be able to utilise it optimally to aid muscle recovery and increase muscle growth.
Throughout the day, small frequent meals, combining moderate amounts of protein, along with complex carbohydrates and healthy fats is the best way to get enough nutrition to fuel muscle growth and maintain health.
There is really no need to take in more than 2-2.5g/kg of protein per day, as it is not going to be of any more benefit than taking in more moderate amounts spread over the key times where the body is most receptive.