Ive been doing lots of physical fitness lately, It really is challenging but the reward of losing weight is worth it, Do you do any physical fitness?
I do fitness walking, but that's it.  What physical fitness activities do you do?
Well  do all kinds, I do strength fitness like running and weight lifting. I love the quality or state of being fit. It makes you feel so much better. 
I'm still waiting for it to make me feel better - right now all it does is make me tired!
Well Physical fitness generally does make you feel tired,  But you can achieve so much through proper nutrition, moderate-vigorous physical exercise, and plenty of rest.