Using a larger amount of AAS for the first week or two of the cycle to reach saturation faster which leads to quicker gains. Generally longer acting compounds are used to front load with as they take longer to take effect
Yes, I tried it on my last cycle with Omna, I front loaded it for the first 2 weeks and did EOD injections and I noticed results much faster (like week 2) compared to week 3-4 when done with out front loading