Cryptography and Fitness Security

I was recently looking into ways to keep my workout and health data secure, especially since I track everything from heart rate to nutrition. With my background in cryptography, I started wondering if there are any clever encryption methods or privacy tools that others here use to protect their personal health information. Have you found any reliable apps or techniques that help keep your data safe without making it a hassle to access when you need it? I’d love to hear what’s worked for you!