Two women in workout clothes doing side planks on yoga mats indoors with 20-year anniversary challenge text.Graphic shows 20 stickers in 30 days challenge and sign up now with monthly prizes in 2026.20 Anniversary Challenge card with stickers and FAQs about start dates, prizes, classes, and locations.Person in light green leggings doing a leg lift over a blue ball with prize ladder text on right.20th anniversary challenge banner asking if you are ready to start 20 in 30 and buy your challenge entry.