I’m 36, riding for about 5 seasons now pretty regularly about 3 times per week with 30-40 miles per ride. On my trainer over the winter. Typical ride: I eat some oatmeal and chocolate before riding and coffee w/milk. And drink 3-4 glasses of water. Normally just water in my bottles but lately I’m putting half OJ half water. After riding I drink 2 glasses of water and eat a muffin and then lunch. I Feel fine the WHOLE ride but whenever I get home I start to feel dizzy and nauseous for a few hours. Kinda hard to focus my eyes, and I feel sleepy. Happens pretty regularly especially when I push myself on the ride. Is this dehydration? I pee every 2 hours after riding but I don’t know if I should drink more? Add electrolytes? Train more? Thanks for any insight