In general, no I would not worry much about it. First don't try a lift you aren't sure you are ready for and two increment by 5# max from workout to workout. S

In general, no I would not worry much about it. First don't try a lift you aren't sure you are ready for and two increment by 5# max from workout to workout. Start light, way lighter than you think you should and work almost exclusively on form. Then each workout increase your weight by 5#s. The entire time it's critical to keep watching your form. Then as you get heavier and heavier you will be much more capable of reading your body and deciding of a weight increase is warranted. Like others have also stated most racks come with safety straps or bars, feel free to use those, especially when you go really heavy. But if you follow the above steps you more than likely won't ever put yourself in a position where you aren't prepared for the weight you have racked. If you want to test your 1 rep max or something then do it with a friend there to spot you. But that's not something you should be doing every workout, it's more of a once in a while thing.