Battery Problems

[Myron]

I always have to re-charge my iPhone 5. Is this normal? It eats-up the power like a kid eats candy. Even during the night, even with all the apps turned-off, it loses over 25% power and must be re-charged every morning, afternoon and night. I see other folks with other phones who tell me they only charge their phones a few times weekly. Is it a battery problem? Also, it often gets extremely hot, not warm, during charging. Hope it doesn't explode.