to tired

im tired all the time and i dont know why i sleep loads but am always so tired, my boyfriend says its because i sleep too mcuh this could be the case, i vow to do more exercise and walk more places, the weather is horrid at the moment so i may leave the walking for a bit. on the weekend i went to aberystwth i do love it there, the seaside is so pretty but its like hours on the bus to get there.