I have been prescribed -5.00d lenses and my question is should i wear my lenses all the time? i normally wear my lenses 5 days a week but i noticed every year my eyesight gets worse and i don't know if it's because i don't wear them all the time?

Your prescription indicates you are nearsighted, also known as myopia. This means you need the lenses to see distance. You should wear your glasses all the time to avoid eye strain, which can result in headaches, fatigue, blurred vision, etc. When you are doing activities close up, like reading, computer work, etc., periodically look into the distance-this may help prevent worsening the myopia.