Some poker tournaments, called freezeouts , only allow you to buy in once. The chips you get at the start of the day are all you can buy for that tournament. Many poker tournaments, particularly those with buy-ins of $100 or less, let you rebuy one or more times during the first hour of the tournament. As the name implies, a rebuy gets you another set of chips to play with. Most of the time you receive the same number of chips that you got at the start of the tournament, but some poker tournaments offer higher chip amounts for successive rebuys. For example, if the field started with $5,000 in tournament chips, a second rebuy might get you $6,000, and the third rebuy $8,000.

Players in rebuy poker tournaments who have set aside money for rebuys will often be much more aggressive than players who intend to buy in only once. For that reason, you’ll often find players going all-in very early in the tournament with marginal poker hands in an attempt to double up and gain leverage against their opponents. Set aside whatever money you want to play for in the tournament, including any rebuys, and buckle your seat belt. You’ll be in for a wild ride until the rebuy period ends.

Also recommended:

1. Playing in Poker Tournaments
2. How to be successful playing Texas Holdem in Sit&Go tournaments?
3. Practicing Holdem Poker Tournament Play
4. Why Cash Games are better than Online Poker Tournaments?
5. Playing Hands from Late Position in Holdem Poker