Start small and only build up your dosage if you experience no side effects. Cycle One: 5mg of YK11 a day for 6 weeks. NOTE: this cycle is great for newbies. Cycle Two: 10-15mg a day for up to 8 weeks. NOTE: only for experienced users, are sarms legal in the us 2022.YK 11 provides the most rapid increase in muscle mass retaining effects even after usage, are sarms legal in the us 2022.