I am 5 foot 8 male 117pounds (1m 73 & 53 kg) just not feeling my best. Feel extremely weak. I do alot of walking daily about 30k steps after the day is over I'm very active during the days. I eat about 2100 calories a day I dont see why I'm only 117 pounds maybe I'm underestimating how many I actually need ? If anyone can help I would appreciate it only issue is I eat whole foods and I'm not very often Hungry but at the same time I get fatigued and weak dizzy even sometimes all my blood work has been checked out I supplement vitamin D and B12 im very concerned.