Muscle hardness isn’t just about lifting heavy things.
2. Your Muscles Are Weak
The truth is, vitamin D deficiency has been linked with muscle fatigue. There are researchers from Harvard that found out that vitamin D supplementation can increase muscle control evidentially, according to them in adults over 60 are reported to have 20% fewer incidences of falling over. The Western Journal of Medicine says that, vitamin D linked muscle fatigue can be wiped out within just six months of taking supplements regularly.