The 90-day challenge is Sylvia's PROVEN system guaranteed to grow your list and get you TONS of sales! The system incorporates Sylvia's signature "Irresistible Incentives" system that she has used to add more than 3,000 people to her list and make 5-figure sales! The 90-day challenge takes authors, speakers, and coaches through Sylvia's signature system. Throughout the challenge, the participants are given a new mini challenge every 2 weeks. The participant who achieves the best results wins a prize. One winner is announced at the end of each challenge.