I've been working out for more than four days a week! The indoor bicycle was becoming a hanger, but thanks to you, it's working well. I feel like my front thighs are getting bigger because I'm riding my bike hard. It's hard even when I touch it while I'm riding it. And 10 minutes after I got on, Y-zone started to get sick. What's wrong with me? Please give me some advice on what kind of exercise I should do!