Your health will effect your game-play and now it will effect it even more.
When you are at full or more health you will get haste.
When you are at 6 hearts you will get a weakness effect.
When you are at 4 hearts you will get an additional mining fatigue effect.
When you reach under 4 hearts you will get an additional mining fatigue 2.
When you are at 2 hearts you will get an additional slowness effect.
At 1 heart you will get weakness, mining fatigue 3, nausea 2, and slowness 3.
When you are at 6 hearts you will get a weakness effect.
When you are at 4 hearts you will get an additional mining fatigue effect.
When you reach under 4 hearts you will get an additional mining fatigue 2.
When you are at 2 hearts you will get an additional slowness effect.
At 1 heart you will get weakness, mining fatigue 3, nausea 2, and slowness 3.