{"version":"1.0","type":"card","id":"f1955a12-795e-41ff-921d-b77ceeeffcbf","url":"https://stacklist.com/card/f1955a12-795e-41ff-921d-b77ceeeffcbf","title":"Performance-enhancing effects of caffeine and L-Theanine","source_url":"https://www.tandfonline.com/doi/full/10.1080/15502783.2025.2564238","note":"Caffeine is a well-known ergogenic aid that can enhance physical and cognitive performance. However, it often induces side effects, such as anxiety and overstimulation, which can be problematic in athletic contexts, particularly among elite wrestlers.","image":{"url":"https://ucarecdn.com/9eb06959-6c90-410b-af7f-d07c2c6e42ff/","alt":"Performance-enhancing effects of caffeine and L-Theanine","width":900,"height":600},"stack":{"id":"8f25870f-2bdd-4f05-aa24-5e84019c3b5e","title":"No Jitters. No Crash. No Excuses.: LSC100 + Clean Energy Science","url":"https://stacklist.com/stack/8f25870f-2bdd-4f05-aa24-5e84019c3b5e"},"created_at":"2026-09-15T13:57:49.239Z","updated_at":null,"aco":null,"_links":{"self":"/api/public/card/f1955a12-795e-41ff-921d-b77ceeeffcbf.json","html":"https://stacklist.com/card/f1955a12-795e-41ff-921d-b77ceeeffcbf","md":"/api/public/card/f1955a12-795e-41ff-921d-b77ceeeffcbf.md","stack_json":"/api/public/stack/8f25870f-2bdd-4f05-aa24-5e84019c3b5e.json"}}