If you review a document, it means you read it and examine it (and maybe have some ideas to improve it) - but you don't make any changes.
If you revise a document, it means you change the text to correct errors or make improvements.
When preparing for a test, it's a good idea to study the material again in order to refresh your memory. American English speakers say you are reviewing for the test. British English speakers say you are revising for the test.
Although online shopping is handy, the 12 days of Christmas health and fitness guide thinks you should get out and shop in the non virtual world at least a few times over Christmas. Walking around the store, carrying bags and pushing a trolley will mean that you re getting a decent workout without realising it. Plus, looking at the Christmas gifts that are now on offer and listening to the carols in stores is not to be missed.