For the longest time, I have been known to have long hard nails. I think part of what makes my nails long and strong is probably due to my parents genes. There are some precautions though that I take to prevent my nails from breaking. One thing that I have discovered over the years that make my nails break is buffing. Every time I get my nails buffed they get weak and break. So I no longer get my nails buffed. I prefer to have a little discolored nails (which I will hide with polish than weak breaking nails. Another way I prevent my nails from breaking is to make sure that I clean the top thoroughly with a nail brush after removing nail polish so that they are clear of any acetone.