I keep on spraining my ankles. Is that normal?

No, it is not normal to have continued ankle sprains. I would recommend a podiatric evaluation. You may have repeated ankle sprains if you don’t have an initial one treated properly and aggressively. If your initial ankle sprain does not heal properly you will have a weak ankle that is prone to sprains. Another reason may be high-arched feet. People with high arches sprain their ankles repeatedly. High-arched feet are very unstable, which causes the ankle to twist inward causing sprains.