“So after being away from the gym for five days, this is how I return. An hour and a half boxing with my boxing coach Phil Polina @philpaolinaboxingclub and then right into an hour session with my trainer Jason Ross @x2ufitness to build this lean muscle!” Anderson captioned his post. “Throwing punches for three straight minutes ain’t no joke! Planking for a minute with 32 pounds on your back ain’t no joke! I’m getting it in! What about you? Where you at @willsmith @richforever I see you boxing! All this in 2 1/2 hours. Doing it again tomorrow! Meet me at the gym!” he wrote before adding a plethora of hashtags, including “#justakidfromcompton, #bigwilliechallenge, #huskyandfit, and #grownmansexy.”