Need to put this paragraph in logical order
one lengthy study session in which all academic work is completed leaves the adult student free to pursue the other activities in their life

those activities could include going to work taking care of family. volunteering, or some other activity.

kids get sick work requires overtime. the shortage of volunteers can cause a heavier burden on those who participate

a scheduled block of time can easily be slashed it half or more-by any one of these occurrences

the reality though tends to be incomparable with that idea

the idea of creating large blocks of time is appealing

1) The idea of creating large blocks of time is appealing.  2) The reality though tends to be incomparable with that idea.   3) Kids get sick (when) work requires overtime. The shortage of volunteers can cause a heavier burden on those who participate.  4) One lengthy study session in which all academic work is completed leaves the adult student free to pursue the other activities in their life.  5) Those activities could include going to work taking care of family, volunteering, or some other activity.  6) A scheduled block of time can easily be slashed into half or more-by any one of these occurrences.

Explanation:

The text is about large or small block of time and activities.

So, the first line tells us about the idea of having large blocks of time. The author says it is appealing. In next line we should either expect continuation in favor of this idea or against it, or any possible issues/problems in this idea. So next line (2) tells us that, tough that idea seems appealing but in reality it does not work so well. Next two lines (3 and 4) present examples against idea of creating large blocks of time/activities, first example for kids, and then for adults. Last words in line 4 are about activities. Hence next line (5) talks about which activities those can be. The last line (6) gives the solution (conclusion) to the problem.

no its not a run on sentence however i think you meant wet suits not sours also a run on sentence would be like surfers surf all winter long in southern california by using wet sours to keep them warm and the live their all year long