-https://www.instagram.com/p/BzWGvCElyzL/?igshid=3y10oys012sx
-https://www.ncbi.nlm.nih.gov/pubmed/30363041 (2)
-https://www.researchgate.net/publication/326055694_High_Resistance-Training_Frequency_Enhances_Muscle_Thickness_in_Resistance-Trained_Men (3)
-https://www.ncbi.nlm.nih.gov/pubmed/27102172 (4)
-https://www.ncbi.nlm.nih.gov/pubmed/12618576 (5)