While that particular muscle group grows strong, your other muscle groups remain weak. So, you are not getting the total workout that you need to make your whole body totally fit. The same concepts apply in researching on the Internet. If you use the same sites again and again, you re not getting the full picture of the resources that are available. While you may be very good at using the information on a site or group of sites, you may be missing out on a whole host of additional resources that can further your research goals.
Balance is the key to researching on the Internet.
You should use every available resource to tone your skills and meet your goals. If there is a particular link site or search engine that you like to use, begin with that site first and then explore some alternate link sites or search engines and compare the results. The same is true with sites containing information on a particular location or surname use not only the one you are familiar with, but try to discover some new sites as well. Of course, it takes time to look through new sites and discover how they function and locate the information that applies to your research. So you might want to schedule some time separate from your normal research time to concentrate on finding new exercises to try to hone your research skills.