Recently, I've found a weird quirk about me after a bike ride (Mountain Bike). Usually I will do 5-10 miles over a few hours in the afternoon after work or in the mornings on my days off. I'm usually doing an up-and-down i.e climbing up a ways than descending. I usually am pretty close to 50/50 climbing/descending. During the entire ride, I feel fine, calorie-wise. I don't feel a bonk, I feel plenty energized, as well as hydrated all the way till when I get home.
However, once I get home, put the bike away and sit down, I feel very depleted. The one symptom is that I don't feel like eating at all. I know it's important to get a steady stream of calories, and I put plenty back in, but when I get home it feels like I just got off a gnarly bonk.
Tips/advice? Eat more? I probably put back in 30-40% of what I'm burning during the ride.