I agree in being weary of health issues. There's risk in everything and for most people I'd say its worth giving it a try, but its definitely best to avoid this if you have a health problem that makes you sensitive to electricity especially a heart issue, chances of injury or even death increase exponentially with such conditions. I'd also add that its probably best to use stuff designed specifically for this rather than just a regular dog collar. Fancy steel has the electric shock training collar and if you have the coin, the advanced training collar. It can be expensive but its worth is for safety I've heard of problems with burns with dog collars. Estim is also a good option.
https://fancysteel.com/collections/fancy-leather/products/new-design-leather-electric-shock-training-collar
https://fancysteel.com/collections/new-arrivals/products/advanced-training-collar
I totally understand this desire though. The idea of being controlled remotely like that is such a big turn on for me. I've not tried it yet, but I definitely want to wear a shock collar some day to see what it is like, and if I do enjoy it I'd definitely want to start wearing one regularly. I fantasize about this quite often and it can be an excellent tool to help a dom exert maximum control and discipline over their sub. That being said, you need to know what you are getting into and as others have already mentioned its not for everyone.