It depends. For me, it works because I'm extremely nervous during tests (I need time reading to be quick and easy on me) and time was a huge issue for me when doing the PTs.
You can always try it for a few days and return it if it doesn't help you, btw. It's the reason why they have the return policy.
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You can always try it for a few days and return it if it doesn't help you, btw. It's the reason why they have the return policy.