One should not do these things   for  good health and life span ? What are they

Every human being want and search for their health and long life. For that they do  practice and  apply many  principles. According to the scripts, the Sastras say many principles including secretes for our health and longvity. If we do not do any bad things or do not do any bad  practice then naturally the good comes to us. This is also one kind of principle.

But  strictly the Scripts say , we should spend the time  in the mid day sunshine,  do not  smell the smoke that  comes from a burning dead body,  do not copulate with a lady who is elder in age, do not eat hard yogurt , do not touch or trample the dust whenit is swept with a broom stick.

If we do not those above said  things then we can have our health and lifespan.