Risk: High

Starting an AI injury prevention and movement screening side hustle from scratch can be risky for someone who can't afford to lose money. There is a potential to lose money due to high setup costs, including purchasing AI technology and specialized equipment. Beginners may invest in training and tools without seeing immediate returns, leading to financial losses. Online discussions mention instances where individuals have faced challenges in monetizing this service or attracting clients, resulting in financial setbacks. Time and energy may also be lost in building expertise and marketing efforts. I'd rate the risk a 1 out of 3 because there is a high chance of losing money, especially if caution is not exercised in managing expenses and revenue generation.