HIKING, DYING

I felt so sick today! I haven't recovered from my sickness yet. We planned to hike from Tsuen Wan to Yuen Long but becoz I was too sick, we just hiked around the hill at Tsuen Wan. I didn't feel wrong before hiking, but when I walked up to the hill and stairs, I was so sick. I felt like vomitting and I had difficult on breathing. It's really strange coz I had never felt that before when I went hiking. Today I had to keep stopping, resting and then walking again. The route wasn't rough but I felt like ages after finishing. I'm really worn out! Thanks god I can come home safety....