Francois, my 10 year old son, would become winded quickly doing any kind of physical activity, but he’d really push his limits without thinking, too. He’d run and jump at top speed in the summer heat and end up with an alarmingly blotchy face which would be yellow and purple-red along with the shortness of breath. The yellow discoloration really worried me.
Having studied homeopathic materia medica on my own, I found some matches for that symptom and for a couple of other little symptoms he was having in Nux vomica. We gave him Nux vomica 30C after an hour at the park, and then before going to the park next the time we gave him another dose preventatively… This time, no yellow blotches AND he was managing his energy better. It only took a couple more doses and we haven’t seen any sign of yellow or purple blotches since then, under the same conditions 🙂