A London-based fitness coach has taken to Instagram to share his top five low-calorie food recommendations, for those looking to shed a few pounds before the festive season. Thomas Whitehead, known as @thomasjwhitehead on Instagram, shared his pearls of wisdom on weight loss with his 29,000+ followers. The advice featured a list of nutrient-dense foods that have “almost zero calories”, making them the perfect dietary addition to help you “get in shape”. “First up is not a food but a drink; caffeine,” Whitehead explained. “Not many people know this but caffeine is the number one ingredient in 9…