Seven Winter-Warrior Steps to Boost Cyclists' Immunity

To stay resilient during winter cycling, the piece recommends seven steps: cover your mouth and nostrils to shield the airways; use probiotics to maintain tryptophan and reduce URTI risk; stretch to keep tendons flexible; top up vitamin D to support immunity; follow hygiene practices (fist bumps, lid-on toilets) to cut infection risk; cut back on alcohol to avoid immune suppression; and keep riding to boost lymphatic flow and overall immunity.