A 4 week cycle of any sarm is a waste. Also after you run a cycle you have to pct then take the proper time off. You cant just take a week off and jump into something else
you should be running 12 weeks of rad, not 8... 4 weeks is absolutely pointless and makes no sense whatsoever... you run rad 12 weeks, then run a 4 week pct... you then need 4 weeks off before you can start again