It used to be that high school students were required to have a graphing calculator. These had to be purchased by the student (iow by their parents) and without factoring in 20+ years of inflation costed more than some Chromebooks available today. I suspect there were (and still are) financial assistance programs as i've known students living below the poverty line and they were able to meet that requirement.
The health benefits of exercise are most likely due to improved blood flow and related physiological effects. In principle, pills could theoretically achieve similar outcomes by enhancing circulation or other underlying mechanisms.
Not taking sides here, just reasoning out loud.
Yes, radioactivity isn't good. You should not, for example, drink this water, or swim in it once a week for good luck. But, it isn't magic death fluid, the worker will have been decontaminated - destroying clothing, washing skin and so on, and the additional exposure means they might get more monitoring, but they're probably fine.
And adults.