I used to enjoy and look forward to my workout and was able to do my workout routine but those last few days, I have lost motivation. I feel no energy and feel so easily tired that I found myself not being able to do my normal workout routine, I'm just easily exhausted. My leg muscle also ache and get tired more easily (my workout consists of running and walking on top of other things) and I used to walk and run every day but I have not being able to do so in the last 2-3 days.
I'm also more hungry than usual. I feel tired.
What could be causing this ? Please help.