Final answer:
Julie should consult her doctor before starting yoga if she has a history of heart disease. This allows for a safe approach to her new exercise regimen.
Step-by-step explanation:
Julie should first see her doctor if she has a history of heart disease. Starting a new exercise program, such as yoga, can present challenges or require special considerations for individuals with pre-existing health conditions. Consulting a physician ensures that Julie can begin her yoga program with a tailored approach that accounts for her health needs and safety.
While a fear of heights, a love for chocolate, or a passion for gardening do not directly impact one's ability to practice yoga, a history of heart disease may necessitate medical advice to proceed safely.