Burpees are actually super high impact. Done warm, let alone cold, they can cause patellar tendonopathy, back strains and hamstring strains. This paper says cy

Burpees are actually super high impact. Done warm, let alone cold, they can cause patellar tendonopathy, back strains and hamstring strains. This paper says cycling - I’d be inclined to agree. Obviously that’s a barrier to entry, because you’d want an indoor stationary bike. On low resistance settings the risk of injury would be very low coming in cold.