Planet Fitness shares fell after the budget-friendly gym operator reduced its full-year revenue outlook. The company cited disappointing member sign-ups during the New Year period, which typically drives the strongest membership growth. This shortfall sends a concerning signal about consumer spending habits and gym industry performance early in 2023.

Investors reacted negatively to the news, with shares declining as the company's growth prospects come under scrutiny. The weak New Year performance suggests consumers may be cutting back on discretionary spending or opting for alternative fitness options. For Planet Fitness, this raises questions about their ability to convert seasonal resolution-seekers into long-term members.

The revenue cut underscores the challenges facing budget gym operators in a post-pandemic market where consumer behavior has shifted. With competition increasing and economic uncertainty lingering, Planet Fitness must adapt its acquisition strategy to attract members beyond the traditional January surge or face continued pressure on its growth trajectory.