Henry Asked: 9 gag lucid dreaming?

is it safe? im going to keep an alarm clock on set to wake me up in 2 hours, would i be able to wake up? like 100% sure? because im worried but i want to dream about someone that means a lot to me. Its my dad and he passed away 3 years ago but your mind is a sleep, you wont be able to move right? but when my alarm rings how would i be able to move? like do i wake up when it rings? thanks!