UFC 5 Block Breaks Tips & tricks

When blocking too many frontal or side strikes in a row to the head, your fighter will move their block to where the majority of the strikes are coming from. This leaves your fighter open to Straights or Hooks depending on where your block has moved. It is best to move away from your opponent when you see your fighter bracing for strikes.

When your Block Meter is low, strikes will cause some damage leaving you vulnerable even if your block is up. Some strikes like Overhands and Roundhouse Kicks will cause some damage no matter how perfect your block might be. Avoid these types of strikes with movement instead.

Some moves carry a guard break property
When block health is low, you are vulnerable to moves that have a guard break. It will do extra damage.