I am experiencing muscle twitching and fatigue. muscle twitching in calfskin and feet. top eye lid twitching left eye for over a month.

Multiple reasons: There can be benign reasons for this (e.g. excessive caffeine use) or very serious reasons such as neuromuscular disorders (e.g. ALS). Best to have it checked out.

Maybe fatigue: This may be a fatigue related due to a sleep disorder. It depends on your general health and how you sleep and what other medical conditions you have. See your physician