I've never lived on the first floor of an apartment so either the person who lives above us is ripping out her floors and installing new closets and getting a brand new washer and dryer up three flights of stairs or I hate my life.
Use often. For added effects and benefits, mix with alcohol and or other drugs. Operate heavy machinery, if you have it. Strengthening results appear in 4 - 6 weeks. Consult a doctor if condition worsens.