Final answer:
Former athletes can face financial challenges at different stages of life, such as ages 45-55 and 55-65.
Step-by-step explanation:
In general, there is no specific age at which most former athletes go flat broke, as it depends on various factors such as the individual's financial decisions and circumstances. However, there are certain periods in life where former athletes may face financial challenges. For example, ages 45-55 can be an expensive period due to responsibilities such as college expenses for their children. Additionally, ages 55-65 can be challenging as it may be difficult for someone of that age to find better job opportunities.