$BTC Any currency that reaches a new high, when there is no estimated resistance above it,
integer levels can be used as reference resistance.
If it breaks 80,000 directly without any obstruction, then the probability of facing resistance at 90,000 will be very high.
Within 3% of the level can be a resistance level, most of the time stopping before the level. A few strong cases may break the level, but then there will be a few days of pullback.
So, spot trading must pay attention to reducing positions, especially in altcoins.