The Martingale betting system in Blackjack involves doubling your bet after each loss, with the idea that when you eventually win, you'll recover all previous losses and make a small profit equal to your original bet. While this strategy can seem appealing, it carries significant risks. If you hit a losing streak, your bets quickly escalate, potentially draining your bankroll or reaching the table's betting limit before you have a chance to recover. The system assumes that a win will eventually come, but it doesn't account for long sequences of losses or the unpredictability of the game. Ultimately, the Martingale system can lead to large losses, making it a high-risk approach to bankroll management.