You know, one thing you might want to look at, is what the physical signs are that you exhibit when you are high. When my son is over 300, he gets flushed patches above his eyes and top of his cheeks. Now there are reasons he could also be flushed and not over 300, but if he isn’t exercising and he gets this way, we are more than 95% right. You might have some visible symptom that you can view in a mirror to check if you high without the equipment.