diff --git a/entity/player.go b/entity/player.go
index 956b6a6..702896e 100644
--- a/entity/player.go
+++ b/entity/player.go
@@ -16,10 +16,10 @@ import (
 )
 
 const (
-	playerVelocity        = 60.0
+	playerVelocity        = 120.0
 	playerGroundAccelTime = 0.1
 	playerGroundAccel     = playerVelocity / playerGroundAccelTime
-	playerAirAccelTime    = 0.25
+	playerAirAccelTime    = 0.5
 	playerAirAccel        = playerVelocity / playerAirAccelTime
 	fallVelocity          = 900.0
 )
@@ -95,7 +95,7 @@ func playerUpdateVelocity(body *cp.Body, gravity cp.Vector, damping, dt float64)
 
 	xDir := 0.0
 	yDir := 0.0
-	if ebiten.IsKeyPressed(ebiten.KeyW) {
+	if ebiten.IsKeyPressed(ebiten.KeyW) && world.PlayerGrounded {
 		yDir -= 1
 		world.LastWalkDirU = true
 	}