Unfortunetly yes there can be sides post cycle.
The most common is that when you use aas, you go beyond your genetic potential and make gains you might not of otherwise made. When you stop aas, you MAY lose some of the gains or see that your body is not as hard as it was.
Sometimes when the hormones are balancing out again, you may experience depression, sluggishness, mood swings, food cravings etc..

Anavar is probably the easiest tolerated with the least amount of sides during and post cycle.

Good luck
super