Put the summary of the bug you're having here

What I expected to happen was...:
Describe what you thought should happen here
It would take off some or all of my hearts
What actually happened was...:
Describe what happened here
it just launched me in the air about 2 blocks and my hearts staid the same
Steps to Reproduce:
1.Go into survival
2. Type: /summon PrimedTnt ~ ~ ~
3. ...Or in a command block type: /summon PrimedTnt ~ ~ ~