If I’m not sore after a workout, does that mean I didn’t work hard enough?
I completely agree with what everyone is saying. Being sore is not a good indicator of whether or not you had a good workout. A good workout should be based how you feel when you are done, which is more energized and invigorated. It is also as others have said based on progression and overload. So if you are pushing yourself to your personal limit then that would be considered a good workout! While soreness may occur as a result of increasing your intensity it should not be used as a way to measure the success of your workout!