Blackjack players adjust their betting strategies based on card counting by varying their bet sizes according to the "count," which reflects the proportion of high cards (10s, face cards, and aces) to low cards (2-6) left in the deck. When the count is favorable, meaning more high cards remain, players increase their bets, as this increases their chances of getting a blackjack or the dealer busting. Conversely, when the count is unfavorable, with more low cards in the deck, players reduce their bets to minimize potential losses. If the count is neutral, they typically stick to the minimum bet. By tracking the count and adjusting their wagers, players aim to maximize their advantage during favorable conditions and minimize risk during unfavorable ones.