Whats the optimal timing for consuming beetroot juice or nitrate-rich foods to maximize its performance-enhancing effects? Should I be slamming down a shot of beetroot juice right before a big ride or incorporating it into my daily diet a few days prior? Are there specific exercises or intensity levels where nitrate-rich foods have a more pronounced effect? And what about individual tolerance - do some people respond better to higher doses of nitrates while others might need a more gradual introduction? Are there any potential interactions with other performance-enhancing supplements or medications that I should be aware of? Lastly, has anyone experimented with combining beetroot juice with other ergogenic aids like caffeine or beta-alanine to create a supercharged performance cocktail?