Lack of rest is the only proven negative physiological effect from sex before a competition.
There are no healthy versions of pancakes, so avoid this breakfast food when possible.
Don't be fooled by bran or muesli muffins. They usually still contain unhealthy ingredients.
By the time you get to your desk at the office, you'll have crashed hard and will be reaching for a snack to push you through.
This is where you made a big mistake. You gave this girl time when she wasn't available.