Strychnine is, in a certain sense, a cumulative poison, but it would be quite impossible for it to result in sudden death in this way. 
Strychnine is a poison which needs a lot of time to affect somebody's health noticeabily.
Strychnine can under no circumstances cause death.
The man is playing video games.
Do you watch CNN every day?
People are jumping into water.
Three people are riding in the limo.
An older woman is drawing outdoors.
There are no hardships in marriage.