i've decided to only take on my non-training days (3 days a week). This is because on my 4 training days i'd rather take some casein based supplement and i know that ZMA works best on an empty stomach, and since casein based supplements are rich in calcium the ZMA will become useless.
Also im worried that if i do take it everyday, i might be overdosing on zinc or magnesium.
So my question: will zma stil be useful if i take it just 3 days a week?
Also, can this product be taken year round or do i have to cycle it?