Muscle weakness

[dmc1892]

Hi,

in the last 5 days or so i started getting cramps in my calves and weakness, i had been doing some running at the gym.

then the last few days i feel like my arms and hands are slightly weaker and i do feel genuinely lethargic, how long should i wait before being concerned?

[Hypomean]

explain how you are exactly when being lethargic?

[nivekc251]

Worry when you can't open a soda can

[dmc1892]

I feel lethargic all through work , i just do not feel switched on mentally or physically when im at work , it's like im in a daze and lack energy but when i get out and go do something like go to the gym i feel great after it.

is this more a mental issue?