Life On TikTok, people are eating Rice Krispies Treats before working out. Is it effective? September 15, 2021September 17, 2021Sara M Moniuszko, USA TODAYComments Off on On TikTok, people are eating Rice Krispies Treats before working out. Is it effective? A viral trend has people reaching for a surprising snack before their workouts: Rice Krispies Treats. But, is it effective? Experts weigh in.