The most important thing to bear in mind before attempting to use an inversion table is that you should have someone nearby, to help you get out afterwards if you need.
The first time you try out the inversion table, don’t stay upside down for longer than a minute or 2. After this period, assess how you feel and whether you are light headed or nauseas.
After that, you can work your way up to around 5 minutes a day, for one or two sessions.