Today my 60 year old husband cut the grass, did a bicep workout, he lifts a lot and has for years and typed on his laptop on his desk-in this order. He drinks a lot of water, but it was very humid and warm today. He takes whey protein after workout. At dinner he started having terrible cramps in both forearms. He takes 25s0mg of magnesium and a multivitamin. He takes blood pressure meds and a water pill, he also takes Adair for asthma. He does have a history of cramping in his legs at night. Any idea what caused the cramps and what else can he do? Thanks. YYYY@YYYY