Take a periodic table. Choose any element as a starting point. Inhale 1 liter at sea level pressure or ingest 0.5 grams per kilo of body weight of the element in question.
If you successfully inhale/ingest the element and don’t die or need medical attention, you get a point. Within 10 minutes, select the next element which must be above, below, to the left or to the right of the previous one. Once you’ve had an element, you can’t have it again or skip over it.
How many points do you think you can collect?