You need to avoid getting 'multiple belts'. You may think you are ok because you are still walking/talking etc. However, electric shocks as I'm sure you know, cause damage to the ares it happens to and can also damage your heart muscles that you may not realise.
I believe that it is now law if you have a shock, especially in work, you are supposed to attend A&E for assessment and probable ECG.
In my mind, one shock is one too many, especially with all the test equipment we have so readily available these days.