If you are just getting access to barbells and heavy weights after months in your living room doing 30 rep sets with your child/dog/old chemistry textbook, EASE IN! You will need time to adapt to the tension and disruption imposed by heavy weights and axially loaded lifts. It’s very easy to quickly accumulate systemic fatigue or injure yourself diving back into regular gym training after a long while off. Slow and steady will keep you from losing more training time injured or blowing your load week 2 of your first meso back! Even if you haven’t lost muscle, your strength will be decreased for a bit–including supportive tissue strength. Build back up slowly and ease in with volume and frequency as well!